Delete the __FD_*() funcs for operating on fd_set from linux/time.h

Delete the __FD_*() functions for operating on fd_set structs from
linux/time.h as they're no longer used within the kernel with the preceding
patch and are not exported to userspace.

Whilst linux/time.h *does* export the FD_*() equivalents as wrappers around
__FD_*(), userspace provides its own definition of __FD_*().

Note that the definition of FD_ZERO() in linux/time.h may not be used with the
fd_sets associated with struct fdtable as the fd_set may have been allocated in
a truncated fashion.

Signed-off-by: David Howells <dhowells@redhat.com>
Link: http://lkml.kernel.org/r/20120216175006.23314.18984.stgit@warthog.procyon.org.uk
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>

include/linux/time.h

@@ -4,11 +4,8 @@
 #include <linux/types.h>
 
 #ifdef __KERNEL__
-# include <linux/bitops.h>
 # include <linux/cache.h>
-# include <linux/posix_types.h>
 # include <linux/seqlock.h>
-# include <linux/string.h>
 # include <linux/math64.h>
 #endif
 
@@ -260,26 +257,6 @@ static __always_inline void timespec_add_ns(struct timespec *a, u64 ns)
 	a->tv_nsec = ns;
 }
 
-static inline void __FD_SET(unsigned long __fd, __kernel_fd_set *__fdsetp)
-{
-	__set_bit(__fd, __fdsetp->fds_bits);
-}
-
-static inline void __FD_CLR(unsigned long __fd, __kernel_fd_set *__fdsetp)
-{
-	__clear_bit(__fd, __fdsetp->fds_bits);
-}
-
-static inline int __FD_ISSET(unsigned long __fd, const __kernel_fd_set *__fdsetp)
-{
-	return test_bit(__fd, __fdsetp->fds_bits);
-}
-
-static inline void __FD_ZERO(__kernel_fd_set *__fdsetp)
-{
-	memset(__fdsetp->fds_bits, 0, sizeof __fdsetp->fds_bits);
-}
-
 #endif /* __KERNEL__ */
 
 #define NFDBITS			__NFDBITS