tiny fix

tools/jenkins/run_full_performance.sh

@@ -31,12 +31,9 @@
 # This script is invoked by Jenkins and runs full performance test suite.
 set -ex
 
-# Enter the workspace root
+# Enter the gRPC repo root
 cd $(dirname $0)/../..
 
-# Enter the grpc repo
-cd grpc
-
 # run 8core client vs 8core server
 tools/run_tests/run_performance_tests.py \
     -l c++ csharp node ruby java python go \