linux58-tkg: Get rid of BLKDEV_MAX_RQ 512 enforcing when CONFIG_ZENIFY is set. It seems to have become unnecessary.

Fixes https://github.com/Frogging-Family/linux-tkg/issues/82

linux58-tkg/linux58-tkg-patches/0003-glitched-base.patch

@@ -186,28 +186,11 @@ Date: Mon, 3 Sep 2018 17:36:25 +0200
 Subject: [PATCH 07/17] Zenify & stuff
 
 ---
- include/linux/blkdev.h |  4 ++++
  init/Kconfig           | 32 ++++++++++++++++++++++++++++++++
  kernel/sched/fair.c    | 25 +++++++++++++++++++++++++
  mm/page-writeback.c    |  8 ++++++++
- 4 files changed, 69 insertions(+)
+ 3 files changed, 65 insertions(+)
 
-diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
-index 57241417ff2f..28efe374a2e1 100644
---- a/include/linux/blkdev.h
-+++ b/include/linux/blkdev.h
-@@ -46,7 +46,11 @@ struct blk_stat_callback;
- struct blk_keyslot_manager;
- 
- #define BLKDEV_MIN_RQ	4
-+#ifdef CONFIG_ZENIFY
-+#define BLKDEV_MAX_RQ	512
-+#else
- #define BLKDEV_MAX_RQ	128	/* Default maximum */
-+#endif
- 
- /* Must be consistent with blk_mq_poll_stats_bkt() */
- #define BLK_MQ_POLL_STATS_BKTS 16
 diff --git a/init/Kconfig b/init/Kconfig
 index 3ae8678e1145..da708eed0f1e 100644
 --- a/init/Kconfig