sparc: defconfig: Cleanup from old Kconfig options

Remove old, dead Kconfig options (in order appearing in this commit):
 - EXPERIMENTAL is gone since v3.9;
 - INET_LRO: commit 7bbf3cae ("ipv4: Remove inet_lro library");
 - AUTOFS_FS: commit 561c5cf9 ("staging: Remove autofs3");
 - RCU_CPU_STALL_DETECTOR: commit a00e0d71 ("rcu: Remove conditional
   compilation for RCU CPU stall warnings");
 - USB_DEVICE_CLASS: commit 007bab91 ("USB: remove
   CONFIG_USB_DEVICE_CLASS");
 - SYSCTL_SYSCALL_CHECK: commit 7c60c48f ("sysctl: Improve the
   sysctl sanity checks");
Signed-off-by: NKrzysztof Kozlowski <krzk@kernel.org>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/sparc/configs/sparc32_defconfig

-CONFIG_EXPERIMENTAL=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
 CONFIG_LOG_BUF_SHIFT=14
@@ -23,7 +22,6 @@ CONFIG_IP_PNP_DHCP=y
 CONFIG_INET_AH=y
 CONFIG_INET_ESP=y
 CONFIG_INET_IPCOMP=y
-# CONFIG_INET_LRO is not set
 CONFIG_INET6_AH=m
 CONFIG_INET6_ESP=m
 CONFIG_INET6_IPCOMP=m
@@ -69,7 +67,6 @@ CONFIG_EXT2_FS=y
 CONFIG_EXT2_FS_XATTR=y
 CONFIG_EXT2_FS_POSIX_ACL=y
 CONFIG_EXT2_FS_SECURITY=y
-CONFIG_AUTOFS_FS=m
 CONFIG_AUTOFS4_FS=m
 CONFIG_ISO9660_FS=m
 CONFIG_PROC_KCORE=y
@@ -82,7 +79,6 @@ CONFIG_NLS=y
 CONFIG_DEBUG_KERNEL=y
 CONFIG_DETECT_HUNG_TASK=y
 # CONFIG_SCHED_DEBUG is not set
-# CONFIG_RCU_CPU_STALL_DETECTOR is not set
 CONFIG_KGDB=y
 CONFIG_KGDB_TESTS=y
 CONFIG_CRYPTO_NULL=m

arch/sparc/configs/sparc64_defconfig

 CONFIG_64BIT=y
-CONFIG_EXPERIMENTAL=y
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
@@ -184,7 +183,6 @@ CONFIG_HID_TOPSEED=y
 CONFIG_HID_THRUSTMASTER=y
 CONFIG_HID_ZEROPLUS=y
 CONFIG_USB=y
-# CONFIG_USB_DEVICE_CLASS is not set
 CONFIG_USB_EHCI_HCD=m
 # CONFIG_USB_EHCI_TT_NEWSCHED is not set
 CONFIG_USB_OHCI_HCD=y
@@ -210,8 +208,6 @@ CONFIG_LOCKUP_DETECTOR=y
 CONFIG_DETECT_HUNG_TASK=y
 # CONFIG_SCHED_DEBUG is not set
 CONFIG_SCHEDSTATS=y
-# CONFIG_RCU_CPU_STALL_DETECTOR is not set
-CONFIG_SYSCTL_SYSCALL_CHECK=y
 CONFIG_BLK_DEV_IO_TRACE=y
 CONFIG_UPROBE_EVENTS=y
 CONFIG_KEYS=y