Revert "gpu: nvgpu: unit: add gr_prepare tests"

This reverts commit 9bfdb2ba03f90f0cf828f08b99101a3a3e6c4532.

Bug 2693908

Change-Id: I3ef56773e46aad3626f16b84ea5e51c2fdcc3f1c
Signed-off-by: Bo Yan <byan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2189200

userspace/install-unit.sh

@@ -103,7 +103,6 @@ fi
 # Building the necessary directory structure. It may not be present
 # first time this is run.
 ssh $target mkdir -p nvgpu_unit/units
-ssh $target mkdir -p nvgpu_unit/firmware
 ssh $target mkdir -p $TOP/kernel
 if [ $? != 0 ]; then
     echo
@@ -122,7 +121,6 @@ jcp $TOP/kernel/nvgpu/userspace/gcov.sh                  nvgpu_unit/gcov.sh
 jcp $TOP/kernel/nvgpu/userspace/testlist.py              nvgpu_unit/testlist.py
 jcp $TOP/kernel/nvgpu/userspace/required_tests.json      \
 	nvgpu_unit/required_tests.json
-jcp $TOP/kernel/nvgpu/userspace/firmware/ nvgpu_unit/firmware/
 
 find $nvgpu_bins/userspace/units -name "*.so" -not -path "*unit.so" \
     -not -path "*drv.so" -exec ls {} \; | while read unit_so ; do