scsi: Remove percpu_ida

With its one user gone, remove the library code.

Signed-off-by: Matthew Wilcox <[email protected]>
Reviewed-by: Jens Axboe <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

Author: Matthew Wilcox

include/linux/percpu_ida.h

@@ -40,7 +40,7 @@ obj-y += bcd.o div64.o sort.o parser.o debug_locks.o random32.o \
 	 bust_spinlocks.o kasprintf.o bitmap.o scatterlist.o \
 	 gcd.o lcm.o list_sort.o uuid.o flex_array.o iov_iter.o clz_ctz.o \
 	 bsearch.o find_bit.o llist.o memweight.o kfifo.o \
-	 percpu-refcount.o percpu_ida.o rhashtable.o reciprocal_div.o \
+	 percpu-refcount.o rhashtable.o reciprocal_div.o \
 	 once.o refcount.o usercopy.o errseq.o bucket_locks.o
 obj-$(CONFIG_STRING_SELFTEST) += test_string.o
 obj-y += string_helpers.o