Remove redundant [C|c]ritical|CRITICAL pattern

This patch removes '[C|c]ritical|CRITICAL' from the AUDITLOGLEVEL
pattern as this pattern is more completely covered by the later
'[C|c]rit?(?:ical)?|CRIT?(?:ICAL)?' pattern.

This also removes a pattern bug as 'CRITICAL' should have been
'CRITICAL|' anyway.

Change-Id: I8c45ee13fb6b40e31bafa744f8fee5f4af7a90f5
Closes-Bug: 1401091
Merge "Remove redundant [C|c]ritical|CRITICAL pattern"