radeonsi: remove DBG_NO_DISCARD_RANGE

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
diff --git a/src/gallium/drivers/radeon/r600_buffer_common.c b/src/gallium/drivers/radeon/r600_buffer_common.c
index 519e52e..f0cfd09 100644
--- a/src/gallium/drivers/radeon/r600_buffer_common.c
+++ b/src/gallium/drivers/radeon/r600_buffer_common.c
@@ -368,7 +368,6 @@
                                       struct pipe_transfer **ptransfer)
 {
 	struct r600_common_context *rctx = (struct r600_common_context*)ctx;
-	struct r600_common_screen *rscreen = (struct r600_common_screen*)ctx->screen;
 	struct r600_resource *rbuffer = r600_resource(resource);
 	uint8_t *data;
 
@@ -436,7 +435,6 @@
 	}
 
 	if ((usage & PIPE_TRANSFER_DISCARD_RANGE) &&
-	    !(rscreen->debug_flags & DBG(NO_DISCARD_RANGE)) &&
 	    ((!(usage & (PIPE_TRANSFER_UNSYNCHRONIZED |
 			 PIPE_TRANSFER_PERSISTENT)) &&
 	      r600_can_dma_copy_buffer(rctx, box->x, 0, box->width)) ||
diff --git a/src/gallium/drivers/radeon/r600_pipe_common.c b/src/gallium/drivers/radeon/r600_pipe_common.c
index 06ae95d..68bde2a 100644
--- a/src/gallium/drivers/radeon/r600_pipe_common.c
+++ b/src/gallium/drivers/radeon/r600_pipe_common.c
@@ -615,8 +615,6 @@
 	/* features */
 	{ "nodma", DBG(NO_ASYNC_DMA), "Disable asynchronous DMA" },
 	{ "nohyperz", DBG(NO_HYPERZ), "Disable Hyper-Z" },
-	/* GL uses the word INVALIDATE, gallium uses the word DISCARD */
-	{ "noinvalrange", DBG(NO_DISCARD_RANGE), "Disable handling of INVALIDATE_RANGE map flags" },
 	{ "no2d", DBG(NO_2D_TILING), "Disable 2D tiling" },
 	{ "notiling", DBG(NO_TILING), "Disable tiling" },
 	{ "switch_on_eop", DBG(SWITCH_ON_EOP), "Program WD/IA to switch on end-of-packet." },
diff --git a/src/gallium/drivers/radeon/r600_pipe_common.h b/src/gallium/drivers/radeon/r600_pipe_common.h
index 0ef5a28..b09acac 100644
--- a/src/gallium/drivers/radeon/r600_pipe_common.h
+++ b/src/gallium/drivers/radeon/r600_pipe_common.h
@@ -101,7 +101,6 @@
 	/* Driver options: */
 	DBG_FORCE_DMA,
 	DBG_NO_ASYNC_DMA,
-	DBG_NO_DISCARD_RANGE,
 	DBG_NO_WC,
 	DBG_CHECK_VM,
 	DBG_RESERVE_VMID,