[xharness] Remove debug lock. (#12510)

This accidentally snuck in.
2021-08-23 15:45:02 +02:00 · 2021-08-23 15:45:02 +02:00 · 8321879461
--- a/tests/xharness/TestProject.cs
+++ b/tests/xharness/TestProject.cs
@ -135,7 +135,6 @@ namespace Xharness {
 				variableSubstitution = doc.CollectAndEvaluateTopLevelProperties (variableSubstitution);
 			}

-			lock (typeof (TestProject))
 			doc.ResolveAllPaths (original_path, variableSubstitution);

 			// Replace RootTestsDirectory with a constant value, so that any relative paths don't end up wrong.