[test-suite, CUDA] Update lit config for CUDA tests.
diff --git a/External/CUDA/lit.local.cfg b/External/CUDA/lit.local.cfg
index 9270e76..18cd573 100644
--- a/External/CUDA/lit.local.cfg
+++ b/External/CUDA/lit.local.cfg
@@ -8,6 +8,7 @@
     'CUDA_CACHE_PATH',
     'CUDA_FORCE_PTX_JIT',
     'CUDA_VISIBLE_DEVICES',
+    'LD_LIBRARY_PATH',
 ]
 
 # We need to propagate cuda environment vars to tests so we can
@@ -17,8 +18,3 @@
     config.environment[var] = os.environ[var]
 
 config.traditional_output = True
-
-# "compiletime" wants to traverse whole build directory after each test which
-# takes a lot of time if we have config with split thrust tests. Disable it
-# until it has smaller overhead.
-config.test_modules.remove("compiletime")