Jan 13 09:20:47 ronin kernel: **********************************************************
Jan 13 09:20:47 ronin kernel: **   NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE   **
Jan 13 09:20:47 ronin kernel: **                                                      **
Jan 13 09:20:47 ronin kernel: ** trace_printk() being used. Allocating extra memory.  **
Jan 13 09:20:47 ronin kernel: **                                                      **
Jan 13 09:20:47 ronin kernel: ** This means that this is a DEBUG kernel and it is     **
Jan 13 09:20:47 ronin kernel: ** unsafe for production use.                           **
Jan 13 09:20:47 ronin kernel: **                                                      **
Jan 13 09:20:47 ronin kernel: ** If you see this message and you are not debugging    **
Jan 13 09:20:47 ronin kernel: ** the kernel, report this immediately to your vendor!  **
Jan 13 09:20:47 ronin kernel: **                                                      **
Jan 13 09:20:47 ronin kernel: **   NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE   **
Jan 13 09:20:47 ronin kernel: **********************************************************

Revert "block, bfq-sq, bfq-mq: trace get and put of bfq groups"

This reverts commit 04c9899.

Using trace_printk causes big fat warning to be emitted that claims
builds using trace_printk are not suitable for production systems.