gcc-plugins: remove duplicate include in gcc-common.h

'tree-ssa-operands.h' included in 'gcc-common.h' is duplicated.
it's also included at line 56.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Ye Guojin <ye.guojin@zte.com.cn>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20211019082910.998257-1-ye.guojin@zte.com.cn

scripts/gcc-plugins/gcc-common.h

@@ -86,7 +86,6 @@
 #include "stmt.h"
 #include "gimplify.h"
 #include "gimple.h"
-#include "tree-ssa-operands.h"
 #include "tree-phinodes.h"
 #include "tree-cfg.h"
 #include "gimple-iterator.h"