Removes unused format string insertion in launcher.c.

PC/launcher.c

@@ -268,7 +268,7 @@ directory\n",
                         }
                         else if (find_existing_python(ip->executable)) {
                             debug(L"locate_pythons_for_key: %ls: already \
-found: %ls\n", ip->executable);
+found\n", ip->executable);
                         }
                         else {
                             /* check the executable type. */