debugging: slides: remove italic from slide titles

There are many slides titles which have some parts in italic, likely to
try to highlight software components or commands, but it does not bring
much, and this practice is not homogeneous among all slides.

Get rid of italic in slides titles everywhere to make slides titles
consistent.

Signed-off-by: Alexis Lothoré <alexis.lothore@bootlin.com>

Author: Tropicao

slides/debugging-application-profiling/debugging-application-profiling.tex

@@ -298,7 +298,7 @@ \subsection{Execution profiling}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{{\em perf stat} example (1/2)}
+  \frametitle{perf stat example (1/2)}
   \begin{block}{}
     \begin{minted}[fontsize=\tiny]{console}
 $ perf stat convert foo.png foo.jpg
@@ -330,7 +330,7 @@ \subsection{Execution profiling}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{{\em perf stat} example (2/2)}
+  \frametitle{perf stat example (2/2)}
   \begin{itemize}
     \item List all events:
   \end{itemize}
@@ -364,7 +364,7 @@ \subsection{Execution profiling}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{{\em Cachegrind}}
+  \frametitle{Cachegrind}
   \begin{itemize}
     \item {\em Cachegrind} is a tool provided by {\em valgrind} for
       profiling program interactions with the instruction and data cache hierarchy.
@@ -395,7 +395,7 @@ \subsection{Execution profiling}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{{\em Callgrind}}
+  \frametitle{Callgrind}
   \begin{itemize}
     \item Provided by {\em valgrind} and allowing to profile an application call graph
           (user-space only).

slides/debugging-application-tracing/debugging-application-tracing.tex

@@ -54,7 +54,7 @@ \subsection{LD\_PRELOAD}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{{\em LD\_PRELOAD} example 1/2}
+  \frametitle{LD\_PRELOAD example 1/2}
   \begin{itemize}
     \item Library snippet that we want to preload using {\em LD\_PRELOAD}:
   \end{itemize}
@@ -89,7 +89,7 @@ \subsection{LD\_PRELOAD}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{{\em LD\_PRELOAD} example 2/2}
+  \frametitle{LD\_PRELOAD example 2/2}
   \begin{itemize}
     \item Chaining a call to the real symbol to avoid altering the
 	    application behavior:
@@ -171,7 +171,7 @@ \subsection{uprobes and perf}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{The {\em perf} tool}
+  \frametitle{The perf tool}
   \begin{itemize}
     \item {\em perf} tool was started as a tool to profile application under
           Linux using performance counters (\manpage{perf}{1}).
@@ -189,7 +189,7 @@ \subsection{uprobes and perf}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{Using {\em perf record}}
+  \frametitle{Using perf record}
   \begin{itemize}
     \item {\em perf record} allows to record performance events per-thread,
           per-process and per-cpu basis.

slides/debugging-common-tools/debugging-common-tools.tex

@@ -202,7 +202,7 @@ \subsection{ELF file analysis}
 
 
 \begin{frame}[fragile]
-  \frametitle{{\em ldd}}
+  \frametitle{ldd}
   \begin{itemize}
     \item In order to display the shared libraries used by an ELF binary, one
           can use {\em ldd} (Generally packaged with C library. See \manpage{ldd}{1}).
@@ -276,7 +276,7 @@ \subsection{Process and CPU monitoring tools}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{{\em ps} example}
+  \frametitle{ps example}
   \begin{itemize}
   \frametitle{Processes with {\em ps}}
     \item Display all processes in a friendly way:
@@ -355,7 +355,7 @@ \subsection{Process and CPU monitoring tools}
 \subsection{Memory monitoring tools}
 
 \begin{frame}[fragile]
-  \frametitle{{\em free}}
+  \frametitle{free}
   \begin{itemize}
     \item {\em free} is a simple program that displays the amount of free and
           used memory in the system (\manpage{free}{1}).

slides/debugging-kernel-debugging/debugging-kernel-debugging.tex

@@ -275,7 +275,7 @@ \subsection{Built-in kernel self tests}
 \end{frame}
 
 \begin{frame}
-  \frametitle{{\em KASAN}}
+  \frametitle{KASAN}
   \begin{itemize}
     \item Kernel Address Space Sanitizer
     \item Allows to find use-after-free and out-of-bounds memory accesses
@@ -293,7 +293,7 @@ \subsection{Built-in kernel self tests}
 \end{frame}
 
 \begin{frame}
-  \frametitle{{\em Kmemleak}}
+  \frametitle{Kmemleak}
   \begin{itemize}
     \item Kmemleak allows to find memory leaks for dynamically allocated objects
           with \code{kmalloc()}
@@ -320,7 +320,7 @@ \subsection{Built-in kernel self tests}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{{\em Kmemleak} report}
+  \frametitle{Kmemleak report}
   \begin{block}{}
     \begin{minted}[fontsize=\small]{console}
 # cat /sys/kernel/debug/kmemleak
@@ -344,7 +344,7 @@ \subsection{Built-in kernel self tests}
 \end{frame}
 
 \begin{frame}
-  \frametitle{{\em UBSAN}}
+  \frametitle{UBSAN}
   \begin{itemize}
     \item UBSAN is a runtime checker for code with undefined behavior
     \begin{itemize}
@@ -366,7 +366,7 @@ \subsection{Built-in kernel self tests}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{{\em UBSAN}: example of UBSAN report}
+  \frametitle{UBSAN: report example}
   \begin{itemize}
     \item Report for an undefined behavior due to a shift with a value > 32.
   \end{itemize}
@@ -466,7 +466,7 @@ \subsection{KGDB}
 \end{frame}
 
 \begin{frame}
-  \frametitle{{\em KDB}}
+  \frametitle{KDB}
   \begin{itemize}
     \item \kconfig{CONFIG_KGDB_KDB} includes a kgdb frontend name "KDB"
     \item This frontend exposes a debug prompt on the serial console which
@@ -503,7 +503,7 @@ \subsection{KGDB}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{{\em kdmx}}
+  \frametitle{kdmx}
   \begin{itemize}
     \item When the system has only a single serial port, it is not possible to
           use both KGDB and the serial line as an output terminal since only one
@@ -553,7 +553,7 @@ \subsection{KGDB}
 \subsection{crash}
 
 \begin{frame}
-  \frametitle{{\em crash}}
+  \frametitle{crash}
   \begin{itemize}
     \item {\em crash} is a CLI tool allowing to investigate kernel (dead or
       alive!)
@@ -574,7 +574,7 @@ \subsection{crash}
 \end{frame}
 
 \begin{frame}[fragile]
-  \frametitle{{\em crash} example}
+  \frametitle{crash example}
   \begin{itemize}
     \begin{block}{}
       \begin{minted}[fontsize=\tiny]{console}