rubocops/lines: update hard-coded compiler check

[carlocab]

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1. llvm-g{cc,++} has been gone for a long time. We don't need to check for this anymore.
2. Also check for calling the compiler as cc, c89, c99, or c++.

[BrewTestBot]

Review period will end on 2023-01-25 at 05:29:50 UTC.

[BrewTestBot]

Review period skipped due to critical label.

[MikeMcQuaid]

Thanks again @carlocab!