Tegra194: remove the GPU reset register macro

There is a possibility that once we have checked that the GPU is
in reset, some component can get still it out of reset.
This patch removes the check register macro.

Change-Id: Idbbba36f97e37c7db64ab9e42848a040ccd05acd
Signed-off-by: Steven Kao <skao@nvidia.com>

plat/nvidia/tegra/include/t194/tegra_def.h

@@ -189,8 +189,6 @@
  * Tegra Clock and Reset Controller constants
  ******************************************************************************/
 #define TEGRA_CAR_RESET_BASE		0x20000000
-#define TEGRA_GPU_RESET_REG_OFFSET	0x18UL
-#define  GPU_RESET_BIT			(1UL << 0)
 
 /*******************************************************************************
  * XUSB PADCTL