removed checking for an unused library in configure.ac

configure

@@ -659,7 +659,6 @@ ENABLE_SSL_TRUE
 SSL_LIBS
 ENABLE_ALL_STATIC_FALSE
 ENABLE_ALL_STATIC_TRUE
-UNICOWS_LIBS
 PTHREAD_CFLAGS
 PTHREAD_LIBS
 PTHREAD_CC
@@ -15474,42 +15473,6 @@ $as_echo "#define HAVE_PTHREAD_MUTEX_TRYLOCK 1" >>confdefs.h
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for main in -lunicows" >&5
-$as_echo_n "checking for main in -lunicows... " >&6; }
-if ${ac_cv_lib_unicows_main+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lunicows  $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-
-int
-main ()
-{
-return main ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_lib_unicows_main=yes
-else
-  ac_cv_lib_unicows_main=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_unicows_main" >&5
-$as_echo "$ac_cv_lib_unicows_main" >&6; }
-if test "x$ac_cv_lib_unicows_main" = xyes; then :
-  UNICOWS_LIBS="-lunicows"
-fi
-
-
-
 # Check whether --enable-all-static was given.
 if test "${enable_all_static+set}" = set; then :
   enableval=$enable_all_static; enable_all_static_is=$enableval