grep: omit propername, as it’s not used

Omit Gnulib’s propername module, as it has not been used since my
commit 3c0a36e514237132db711bfef57a74c64592c4e2 dated Thu Dec 20
16:35:55 2018 -0800.
* bootstrap.conf (avoided_gnulib_modules):
Do not avoid mbchar, as it is no longer pulled in by propername.
(gnulib_modules): Remove propername.
* src/Makefile.am (LDADD):
* tests/Makefile.am (LDADD): Remove $(LIBICONV); no longer needed.
* src/grep.c: Do not include propername.h.

bootstrap.conf

@@ -17,7 +17,6 @@
 
 avoided_gnulib_modules='
   --avoid=lock-tests
-  --avoid=mbchar
   --avoid=mbuiter
   --avoid=mbuiterf
   --avoid=mbrtowc-tests
@@ -76,7 +75,6 @@ minmax
 obstack
 openat-safer
 perl
-propername
 rawmemchr
 readme-release
 realloc-gnu

src/Makefile.am

@@ -42,7 +42,7 @@ noinst_HEADERS = grep.h kwset.h search.h system.h
 # But libgreputils.a must also follow $(LIBINTL), since libintl uses
 # replacement functions defined in libgreputils.a.
 LDADD = \
-  ../lib/libgreputils.a $(LIBINTL) ../lib/libgreputils.a $(LIBICONV) \
+  ../lib/libgreputils.a $(LIBINTL) ../lib/libgreputils.a \
   $(HARD_LOCALE_LIB) $(LIBC32CONV) \
   $(LIBSIGSEGV) $(LIBUNISTRING) $(MBRTOWC_LIB) $(SETLOCALE_NULL_LIB) \
   $(LIBTHREAD)

src/grep.c

@@ -45,7 +45,6 @@
 #include "grep.h"
 #include "hash.h"
 #include "intprops.h"
-#include "propername.h"
 #include "safe-read.h"
 #include "search.h"
 #include "c-strcase.h"

tests/Makefile.am

@@ -42,7 +42,7 @@ AM_CFLAGS = $(WARN_CFLAGS) $(WERROR_CFLAGS)
 # Tell the linker to omit references to unused shared libraries.
 AM_LDFLAGS = $(IGNORE_UNUSED_LIBRARIES_CFLAGS)
 LDADD = ../lib/libgreputils.a $(LIBINTL) ../lib/libgreputils.a \
-  $(HARD_LOCALE_LIB) $(LIBC32CONV) $(LIBCSTACK) $(LIBICONV) \
+  $(HARD_LOCALE_LIB) $(LIBC32CONV) $(LIBCSTACK) \
   $(LIBSIGSEGV) $(LIBUNISTRING) $(MBRTOWC_LIB) $(SETLOCALE_NULL_LIB) \
   $(LIBTHREAD)