Correct grep for deleting sql files

[vonba]

The local_remote function names the output file as mysql but the other functions name the output file as just "sql". This means that the "grep mysql" in the other functions won't find anything to delete. In my version I have normalised this so that all files are names "sql" and all searches also use "sql". I don't know if this repo is still being maintained but in case this helps anyone.