fix double method

Author: mcb5637

conanfile.py

@@ -45,10 +45,6 @@ def build(self):
             cmake.configure()
             cmake.build()
 
-    def package(self):
-        # This will also copy the "include" folder
-        copy(self, "*.h", self.source_folder, self.package_folder)
-
     def package_id(self):
         self.info.clear()