Remove myself from mentions inside tests/ui/check-cfg directory

Author: Urgau

Diff for: triagebot.toml

@@ -938,9 +938,6 @@ cc = ["@rust-lang/project-exploit-mitigations", "@rcvalle"]
 [mentions."tests/ui/stack-protector"]
 cc = ["@rust-lang/project-exploit-mitigations", "@rcvalle"]
 
-[mentions."tests/ui/check-cfg"]
-cc = ["@Urgau"]
-
 [mentions."compiler/rustc_middle/src/mir/coverage.rs"]
 message = "Some changes occurred in coverage instrumentation."
 cc = ["@Zalathar"]