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"

libweston-desktop/xdg-shell-v5.c

@@ -32,7 +32,7 @@
 
 #include "compositor.h"
 #include "zalloc.h"
-#include "protocol/xdg-shell-unstable-v5-server-protocol.h"
+#include "xdg-shell-unstable-v5-server-protocol.h"
 
 #include "libweston-desktop.h"
 #include "internal.h"

libweston-desktop/xdg-shell-v6.c

@@ -33,7 +33,7 @@
 
 #include "compositor.h"
 #include "zalloc.h"
-#include "protocol/xdg-shell-unstable-v6-server-protocol.h"
+#include "xdg-shell-unstable-v6-server-protocol.h"
 
 #include "libweston-desktop.h"
 #include "internal.h"

libweston/input.c

@@ -39,8 +39,8 @@
 #include "shared/helpers.h"
 #include "shared/os-compatibility.h"
 #include "compositor.h"
-#include "protocol/relative-pointer-unstable-v1-server-protocol.h"
+#include "relative-pointer-unstable-v1-server-protocol.h"
-#include "protocol/pointer-constraints-unstable-v1-server-protocol.h"
+#include "pointer-constraints-unstable-v1-server-protocol.h"
 
 enum pointer_constraint_type {
 	POINTER_CONSTRAINT_TYPE_LOCK,