*: remove remaining __cplusplus checks

src/ConfigGlobal.hxx

@@ -30,9 +30,7 @@
 #define DEFAULT_PLAYLIST_MAX_LENGTH (1024*16)
 #define DEFAULT_PLAYLIST_SAVE_ABSOLUTE_PATHS false
 
-#ifdef __cplusplus
 class Path;
-#endif
 
 void config_global_init(void);
 void config_global_finish(void);
@@ -43,17 +41,9 @@ void config_global_finish(void);
  */
 void config_global_check(void);
 
-#ifdef __cplusplus
-
 bool
 ReadConfigFile(const Path &path, GError **error_r);
 
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 /* don't free the returned value
    set _last_ to NULL to get first entry */
 gcc_pure
@@ -102,8 +92,4 @@ config_get_positive(enum ConfigOption option, unsigned default_value);
 gcc_pure
 bool config_get_bool(enum ConfigOption option, bool default_value);
 
-#ifdef __cplusplus
-}
-#endif
-
 #endif