XR-3710 Merge formatNewlineComma() to formatComma()
XR-3710 Merge formatNewlineComma() to formatComma()

The helper function didn't really add much value - now the comment
at the top of formatComma() makes more sense as it really applies
to what the function itself does.

zeroturnaround/sql-formatter,zeroturnaround/sql-formatter,zeroturnaround/sql-formatter