Remove C++ pseudo support

tests/cpath/test_cpath.h

@@ -3,16 +3,8 @@
 
 #include "wapp.h"
 
-#ifdef WAPP_PLATFORM_CPP
-BEGIN_C_LINKAGE
-#endif // WAPP_PLATFORM_CPP
-
 TestFuncResult test_cpath_join_path(void);
 TestFuncResult test_cpath_dirname(void);
 TestFuncResult test_cpath_dirup(void);
 
-#ifdef WAPP_PLATFORM_CPP
-END_C_LINKAGE
-#endif // WAPP_PLATFORM_CPP
-
 #endif // !TEST_CPATH_H