config: remove checks with unused defines

All of these set a #define that doesn't appear anywhere in the tree.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #16479

config/kernel.m4

@@ -45,8 +45,6 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
 	ZFS_AC_KERNEL_SRC_FALLOCATE
 	ZFS_AC_KERNEL_SRC_FADVISE
 	ZFS_AC_KERNEL_SRC_GENERIC_FADVISE
-	ZFS_AC_KERNEL_SRC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE
-	ZFS_AC_KERNEL_SRC_RWSEM
 	ZFS_AC_KERNEL_SRC_SCHED
 	ZFS_AC_KERNEL_SRC_USLEEP_RANGE
 	ZFS_AC_KERNEL_SRC_KMEM_CACHE
@@ -142,7 +140,6 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
 	ZFS_AC_KERNEL_SRC_KTIME
 	ZFS_AC_KERNEL_SRC_TOTALRAM_PAGES_FUNC
 	ZFS_AC_KERNEL_SRC_TOTALHIGH_PAGES
-	ZFS_AC_KERNEL_SRC_KSTRTOUL
 	ZFS_AC_KERNEL_SRC_PERCPU
 	ZFS_AC_KERNEL_SRC_CPU_HOTPLUG
 	ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR
@@ -202,8 +199,6 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
 	ZFS_AC_KERNEL_FALLOCATE
 	ZFS_AC_KERNEL_FADVISE
 	ZFS_AC_KERNEL_GENERIC_FADVISE
-	ZFS_AC_KERNEL_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE
-	ZFS_AC_KERNEL_RWSEM
 	ZFS_AC_KERNEL_SCHED
 	ZFS_AC_KERNEL_USLEEP_RANGE
 	ZFS_AC_KERNEL_KMEM_CACHE
@@ -299,7 +294,6 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
 	ZFS_AC_KERNEL_KTIME
 	ZFS_AC_KERNEL_TOTALRAM_PAGES_FUNC
 	ZFS_AC_KERNEL_TOTALHIGH_PAGES
-	ZFS_AC_KERNEL_KSTRTOUL
 	ZFS_AC_KERNEL_PERCPU
 	ZFS_AC_KERNEL_CPU_HOTPLUG
 	ZFS_AC_KERNEL_GENERIC_FILLATTR