fs: Remove asm/kmap_types.h includes

Historical leftovers from the time where kmap() had fixed slots.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Sterba <dsterba@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/r/20201103095856.870272797@linutronix.de

fs/aio.c

@@ -43,7 +43,6 @@
 #include <linux/mount.h>
 #include <linux/pseudo_fs.h>
 
-#include <asm/kmap_types.h>
 #include <linux/uaccess.h>
 #include <linux/nospec.h>
 

fs/btrfs/ctree.h

@@ -17,7 +17,6 @@
 #include <linux/wait.h>
 #include <linux/slab.h>
 #include <trace/events/btrfs.h>
-#include <asm/kmap_types.h>
 #include <asm/unaligned.h>
 #include <linux/pagemap.h>
 #include <linux/btrfs.h>