Un-indent RPC test output in test runner

The indentation caused the test stdout to be buffered and only printed at the
end of the test, which makes it harder to diagnose hanging tests.

qa/pull-tester/rpc-tests.sh

@@ -85,7 +85,7 @@ function runTestScript
 
     echo -e "=== Running testscript ${testName} ==="
 
-    if eval "$@" | sed 's/^/  /'
+    if eval "$@"
     then
         successCount=$(expr $successCount + 1)
         echo "--- Success: ${testName} ---"