LLVM 17/18 proftext parsing failure#37

I don't care a great deal about these because they're not something tarpaulin requires, but it would be generally nice to fix them. For llvm 17 and 18 I've removed the following test vector from proftext parsing: flatten_instr.proftext: ``` # IR level Instrumentation Flag :ir # Always instrument the function entry block :entry_first foo # Func Hash: 1111 # Num Counters: 5 # Counter Values: 10000 50 2000 40 6000 bar.cc:bar # Func Hash: 2222 # Num Counters: 10 # Counter Values: 0 0 0 0 0 0 0 0 0 0 ```