drm/radeon/r600: remove some regs are not safe regs for command buffers

Only the drm should be touching them.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/reg_srcs/r600

@@ -824,8 +824,6 @@ r600 0x9400
 0x00028428 CB_FOG_GREEN
 0x00028424 CB_FOG_RED
 0x00008040 WAIT_UNTIL
-0x00008950 CC_GC_SHADER_PIPE_CONFIG
-0x00008954 GC_USER_SHADER_PIPE_CONFIG
 0x00009714 VC_ENHANCE
 0x00009830 DB_DEBUG
 0x00009838 DB_WATERMARKS
@@ -834,4 +832,3 @@ r600 0x9400
 0x00009504 TA_CNTL
 0x00009700 VC_CNTL
 0x00009718 VC_CONFIG
-0x0000A02C SMX_DC_MC_INTF_CTL