Removed the fake "final" keyword, which was clashing with some 3rd-party headers.

modules/juce_core/system/juce_PlatformDefs.h

@@ -323,7 +323,7 @@ namespace juce
  #define JUCE_COMPILER_SUPPORTS_OVERRIDE_AND_FINAL 1
 #endif
 
-#if (! JUCE_CLANG) && defined (__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 40700
+#if (! JUCE_CLANG) && defined (__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 407
  #define JUCE_COMPILER_SUPPORTS_OVERRIDE_AND_FINAL 1
 #endif
 
@@ -349,8 +349,6 @@ namespace juce
 #if ! (DOXYGEN || JUCE_COMPILER_SUPPORTS_OVERRIDE_AND_FINAL)
  #undef  override
  #define override
- #undef  final
- #define final
 #endif
 
 #endif   // __JUCE_PLATFORMDEFS_JUCEHEADER__