x11/hyprpicker: unbreak build without libglvnd

In file included from src/main.cpp:5:
In file included from src/hyprpicker.hpp:3:
In file included from src/defines.hpp:5:
src/includes.hpp:30:10: fatal error: 'GLES3/gl32.h' file not found
 #include <GLES3/gl32.h>
          ^~~~~~~~~~~~~~

PR:		277449
Reported by:	Elena

x11/hyprpicker/Makefile

@@ -47,6 +47,9 @@ post-patch:
 		-e '/pthread/d; /CMAKE_THREAD_LIBS_INIT/d' \
 		-e '/ rt)/d' \
 		${WRKSRC}/CMakeLists.txt
+	@${REINPLACE_CMD} -e '/GLES3/d' \
+		-e '/pthread\.h/d' \
+		${WRKSRC}/src/includes.hpp
 
 pre-configure:
 	@${SETENV} ${MAKE_ENV} ${GMAKE} protocols -C${WRKSRC}