Revert "Uplift GPU RT version for Linux to 20.33.17675 (#2374)" (#2401)

This reverts commit 5f38e4b.

Author: yanfeng3721

buildbot/dependency.conf

@@ -5,7 +5,7 @@ ocl_cpu_rt_ver=2020.10.7.0.15
 ocl_cpu_rt_ver_win=2020.10.7.0.15
 # Same GPU driver supports Level Zero and OpenCL:
 # https://github.com/intel/compute-runtime/releases/tag/20.29.17408
-ocl_gpu_rt_ver=20.33.17675
+ocl_gpu_rt_ver=20.29.17408
 # Same GPU driver supports Level Zero and OpenCL:
 # https://downloadmirror.intel.com/29674/a08/igfx_win10_100.8336.zip
 ocl_gpu_rt_ver_win=27.20.100.8336
@@ -24,7 +24,7 @@ fpga_ver_win=20200701_000002
 [DRIVER VERSIONS]
 cpu_driver_lin=2020.10.7.0.15
 cpu_driver_win=2020.10.7.0.15
-gpu_driver_lin=20.33.17675
+gpu_driver_lin=20.29.17408
 gpu_driver_win=27.20.100.8336
 fpga_driver_lin=2020.10.7.0.15
 fpga_driver_win=2020.10.7.0.15