sdl12-compat: hints: Don't double-set SDL_VIDEODRIVER.

From 671cd3feca6bacc75b9e05ce2e31f7f90c6dda55 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Thu, 8 Sep 2022 11:20:27 -0400
Subject: [PATCH] hints: Don't double-set SDL_VIDEODRIVER.

sdl12-compat hints are always environment variables now, so no need to
force the environment variable now; it's already there.
---
 src/SDL12_compat.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/src/SDL12_compat.c b/src/SDL12_compat.c
index 3265965c..5fc0bf20 100644
--- a/src/SDL12_compat.c
+++ b/src/SDL12_compat.c
@@ -2309,12 +2309,6 @@ SDL_InitSubSystem(Uint32 sdl12flags)
     sdl12_compat_macos_init();
 #endif
 
-    /* Some applications need to force a specific videodriver. */
-    forcevideodrv = SDL12Compat_GetHint("SDL_VIDEODRIVER");
-    if (forcevideodrv) {
-        SDL20_setenv("SDL_VIDEODRIVER", forcevideodrv, 1);
-    }
-
     /* note that currently we ignore SDL12_INIT_NOPARACHUTE, since
        there _isn't_ a parachute in SDL2, and mostly it was meant to deal
        with X11's XVidMode leaving the display resolution busted if the app