build: Move <sbindir>/install-info uninstallation to utils/

Put it where install-info is being handled.

scripts/Makefile.am

@@ -131,7 +131,6 @@ install-data-hook:
 
 uninstall-local:
 	rm -f $(DESTDIR)$(sysconfdir)/alternatives/README
-	rm -f $(DESTDIR)$(sbindir)/install-info
 
 TEST_VERBOSE= 0
 

utils/Makefile.am

@@ -30,3 +30,6 @@ dpkg_install_info_LDADD = \
 
 transform = s/dpkg-install-info/install-info/; $(program_transform_name)
 
+uninstall-local:
+	rm -f $(DESTDIR)$(sbindir)/install-info
+