Makefile.in: stop trying to remove config.h on distclean

There is no config.h nor config.h.in in the repository:

    $ git ls-files -- '*config.h*'
    $

The filename is only mentioned on the generated configure script, as a
generic example of an autoconf config file:

    $ git grep -F -A 1 -B 2 config.h | grep -v '^Makefile.in'
    --
    configure-# Set up the scripts for CONFIG_FILES section.
    configure-# No need to generate them if there are no CONFIG_FILES.
    configure:# This happens for instance with `./config.status config.h'.
    configure-if test -n "$CONFIG_FILES"; then
    --
    configure-    # Let's still pretend it is `configure' which instantiates (i.e., don't
    configure-    # use $as_me), people would be surprised to read:
    configure:    #    /* config.h.  Generated by config.status.  */
    configure-    configure_input='Generated from '`

1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile.in b/Makefile.in
index 781bb237f..18163d195 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -101,7 +101,7 @@ distclean: clean
                 $(MAKE) -C $$dir distclean; \
         done
         $(MAKE) -C test distclean
-        rm -fr Makefile autom4te.cache config.log config.status config.h src/common.mk mkdeb.sh
+        rm -fr Makefile autom4te.cache config.log config.status src/common.mk mkdeb.sh
 
 realinstall:
         # firejail executable