window.c: Just use float instead of GLfloat, remove GLES2.h include
diff --git a/clients/flower.c b/clients/flower.c
index 5fc14b5..8bf4f3e 100644
--- a/clients/flower.c
+++ b/clients/flower.c
@@ -134,7 +134,7 @@
 
 static int
 motion_handler(struct widget *widget, struct input *input,
-	       uint32_t time, GLfloat x, GLfloat y, void *data)
+	       uint32_t time, float x, float y, void *data)
 {
 	return POINTER_HAND1;
 }