Revert "[UTC] Fix git URL regex"

This reverts commit 6d64faf, as it is
built on top of https://reviews.llvm.org/D148216 which is broken.

See also #63746

llvm/utils/UpdateTestChecks/common.py

@@ -1577,7 +1577,7 @@ def add(var):
 
 # The capture group is kept as is, followed by a {{.*}} glob
 METADATA_FILTERS = [
-    r"(\w+ version )[\d.]+ \([\w.:/@-]+\.git \w+\)",
+    r"(\w+ version )[\d.]+ \(git@[\w.:/-]+\.git \w+\)",
     r'(!DIFile\(filename: ".+", directory: )".+"',
 ]
 METADATA_FILTERS_RE = [re.compile(s) for s in METADATA_FILTERS]