Remove some dependencies no longer needed

* bootstrap.conf (gnulib_modules): Remove clock-time,
nstrftime, stdc_bit_ceil, time.
* src/inp.c: Do not include stdbit.h.

bootstrap.conf

@@ -24,7 +24,6 @@ attribute
 backupfile
 basename-lgpl
 c-ctype
-clock-time
 closeout
 diffseq
 dup2
@@ -59,7 +58,6 @@ memchr
 mempcpy
 minmax
 mkdirat
-nstrftime
 nullptr
 openat
 parse-datetime
@@ -74,14 +72,12 @@ signal-h
 ssize_t
 stat-time
 stdbool
-stdc_bit_ceil
 stdckdint
 stdlib
 stpcpy
 symlinkat
 sys_stat
 tempname
-time
 unistd
 unlinkat
 update-copyright

src/inp.c

@@ -18,8 +18,6 @@
 
 #include <common.h>
 
-#include <stdbit.h>
-
 #include <quotearg.h>
 #include <util.h>
 #include <xalloc.h>