Fix build error in SetProjectCommand

This was a merge error caused by Martin and I both merging
incompatible changes at the same time. I merged something that
modified this API, Martin merged a new caller of the API.

Change-Id: Iee5e2479f24d7a1e151c670a1f10a071c9547f84

gerrit-sshd/src/main/java/com/google/gerrit/sshd/commands/SetProjectCommand.java

@@ -130,9 +130,7 @@ final class SetProjectCommand extends SshCommand {
         project.setState(state != null ? state : project.getState());
 
         md.setMessage("Project settings updated");
-        if (!config.commit(md)) {
-          err.append("error: Could not update project " + name + "\n");
-        }
+        config.commit(md);
       } finally {
         md.close();
       }