Remove unused, undocumented debug/dump flag `-ddump-vt-trace`
Removes undocumented, unused debug/dump flag -ddump-vt-trace
(belonged to vectorizer which was removed in 2018).
See #20403 (closed)
Removes undocumented, unused debug/dump flag -ddump-vt-trace
(belonged to vectorizer which was removed in 2018).
See #20403 (closed)