patch/gfx: Remove non working window mode feature

This wasn't worked as intended since the beginning. There was also
an issue that actually raised a discussion about this and clarified
that it's not that easy under linux unfortunately.

src/main/hook/patch/gfx.c

@@ -27,8 +27,6 @@ typedef Display *(*XOpenDisplay_t)(const char *display_name);
 typedef XVisualInfo *(*glXChooseVisual_t)(
     Display *dpy, int screen, int *attribList);
 
-static bool patch_gfx_force_window = false;
-
 static bool patch_gfx_initialized;
 static XCreateWindow_t patch_gfx_real_XCreateWindow;
 static XOpenDisplay_t patch_gfx_real_XOpenDisplay;
@@ -84,11 +82,6 @@ Window XCreateWindow(
     }
   }
 
-  if (patch_gfx_force_window) {
-    log_info("Forcing window mode");
-    attributes->override_redirect = 0;
-  }
-
   return patch_gfx_real_XCreateWindow(
       display,
       parent,
@@ -164,8 +157,3 @@ void patch_gfx_init()
   patch_gfx_initialized = true;
   log_info("Initialized");
 }
-
-void patch_gfx_force_window_mode()
-{
-  patch_gfx_force_window = true;
-}

src/main/hook/patch/gfx.h

@@ -9,9 +9,4 @@
  */
 void patch_gfx_init();
 
-/**
- * Force the game into window mode
- */
-void patch_gfx_force_window_mode();
-
 #endif