radv: remove RDR2 discard workaround

The game appears to use HLSL, so this workaround now lives in
SPIR-V -> NIR.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7062>

src/amd/vulkan/radv_device.c

@@ -582,9 +582,6 @@ radv_handle_per_app_options(struct radv_instance *instance,
 		} else if (!strcmp(name, "DOOMEternal")) {
 			/* Zero VRAM for Doom Eternal to fix rendering issues. */
 			instance->debug_flags |= RADV_DEBUG_ZERO_VRAM;
-		} else if (!strcmp(name, "Red Dead Redemption 2")) {
-			/* Work around a RDR2 game bug */
-			instance->debug_flags |= RADV_DEBUG_DISCARD_TO_DEMOTE;
 		}
 	}