Remove unused code for logging setup

Co-Authored-By: Luke Lau <luke_lau@icloud.com>

Author: fendor

app/MainHie.hs

@@ -123,7 +123,6 @@ run opts = do
  verbosity = if optBiosVerbose opts then Verbose else Silent
  -- biosLogLevel = if optBiosVerbose opts then L.DEBUG else L.INFO
 
- -- Core.setupLogger mLogFileName ["hie-bios"] biosLogLevel
 
  when (optBiosVerbose opts) $
  logm "Enabling verbose mode for hie-bios. This option currently doesn't do anything."