main/mdocml: silence makewhatis outdated moan

Since the mdocml-apropos package (which provides makewhatis) is not pulled in by default, and isn't needed, then stop moaning about it being missing.

Silences e.g.:

$ man neomutt
man: outdated mandoc.db lacks neomutt(1) entry, run makewhatis /usr/share/man

main/mdocml/APKBUILD

@@ -2,7 +2,7 @@
 pkgname=mdocml
 _pkgname=mandoc
 pkgver=1.14.3
-pkgrel=1
+pkgrel=2
 pkgdesc="mdoc/man compiler"
 url="http://mdocml.bsd.lv/"
 arch="all"
@@ -16,6 +16,7 @@ subpackages="$pkgname-doc $pkgname-dev man::noarch $pkgname-apropos $pkgname-soe
 source="http://mdocml.bsd.lv/snapshots/$_pkgname-$pkgver.tar.gz
 	shared-libmandoc.patch
 	pager.patch
+	outdated-warn-disable.patch
 	mdocml-apropos.trigger
 	"
 
@@ -78,4 +79,5 @@ soelim() {
 sha512sums="cd638fbacb068fcd6191f2a4e941effc010e3ebf06a3e32847b892c2e561771d03d5bca8fbdf8434d6491f4b68df3f443e2568b79193b7342044fba476fcd30b  mandoc-1.14.3.tar.gz
 d127e635dfb54f9a88a28a8312f23495ec1e9356202e03ccfad1f7528f26f1cbfa7fc2c7b20c262523941d661fa7ba570a64a63c23f3e7fffc954d00bd5769c7  shared-libmandoc.patch
 04947a275df99298591c2a46fb81b74c7c3fcb9f3cf8fb718cf1e32eeae5409e90a3bca89e542f8aa1b30792e837fd3d716303a636d1a3ec165fbb9529546a64  pager.patch
+ced05e8b57fb9705c6d8d8570cd6b06ad187511a4c243ac2dbc34064aa164ca49e0c877160134161dcb98ebd5e61a5c23d5741f03ef95903ff56193dd07f36a1  outdated-warn-disable.patch
 704bc159acfc639e10c7d505372d303cb5784c8e9eb30084236ad89978978d4ba74f3127d4597d78594b64182c47a00c011f8bb3271d2b784f03a2a411ccb1d8  mdocml-apropos.trigger"

main/mdocml/outdated-warn-disable.patch

+diff -Naur a/main.c b/main.c
+--- a/main.c	2019-03-03 15:24:23.600767518 +0000
++++ b/main.c	2019-03-03 15:27:37.609820365 +0000
+@@ -676,8 +676,6 @@
+ 	return globres != -1;
+ 
+ found:
+-	warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s",
+-	    name, sec, BINM_MAKEWHATIS, paths->paths[ipath]);
+ 	if (res == NULL) {
+ 		free(file);
+ 		return 1;