Remove duplicate declaration "invalidateCaches_IS"

Signed-off-by: Du Huanpeng <dhu@hodcarrier.org>

Author: hodcarrier

ports_smp/cortex_a5_smp/gnu/example_build/v7.h

@@ -35,7 +35,6 @@ void disableInterrupts(void);
 // ------------------------------------------------------------
 // Caches
 
-void invalidateCaches_IS(void);
 void cleanInvalidateDCache(void);
 void invalidateCaches_IS(void);
 void enableCaches(void);