Don't prepend protocol/ to include paths

No need to add protocol/, as it's already handled by an explicit
compiler include path.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Dima Ryazanov <dima@gmail.com>

clients/simple-egl.c

@@ -45,7 +45,7 @@
 #include "xdg-shell-unstable-v6-client-protocol.h"
 #include <sys/types.h>
 #include <unistd.h>
-#include "protocol/ivi-application-client-protocol.h"
+#include "ivi-application-client-protocol.h"
 #define IVI_SURFACE_ID 9000
 
 #include "shared/helpers.h"