Remove FCall class def

Author: jkoritzinsky

src/coreclr/vm/ecalllist.h

@@ -383,7 +383,6 @@ FCClassElement("Array", "System", gArrayFuncs)
 FCClassElement("AssemblyLoadContext", "System.Runtime.Loader", gAssemblyLoadContextFuncs)
 FCClassElement("Buffer", "System", gBufferFuncs)
 FCClassElement("CastHelpers", "System.Runtime.CompilerServices", gCastHelpers)
-FCClassElement("ComAwareWeakReference", "System", gComAwareWeakReferenceFuncs)
 FCClassElement("Delegate", "System", gDelegateFuncs)
 FCClassElement("DependentHandle", "System.Runtime", gDependentHandleFuncs)
 FCClassElement("Environment", "System", gEnvironmentFuncs)