makepkg: lint_pkgver: Run even if PKGVERFUNC

lint_pkgver returns 0 if PKGVERFUNC, since it's likely that update_pkgver()
will change the value of pkgver anyway, and there's no point in linting the
old value.  update_pkgver() will call check_pkgver() itself to validate the
new value.

However, that "optimization" only holds if we're definitely going to call
update_pkgver() later; and that's way more complicated than

    if (( PKGVERFUNC )); then

it's more like:

    if (( !GENINTEG && !PACKAGELIST && !PRINTSRCINFO && !SOURCEONLY && !REPKG && PKGVERFUNC )); then

Which is to say: If I have a PKGBUILD with pkgver():

 * if I run `makepkg -g` I expect it to lint pkgver, but it won't
 * if I run `makepkg -R` I expect it to lint pkgver, but it won't
 * ...

So let's fix that.

Rather than try to keep a huge list of conditions in sync with the flow of
makepkg.sh.in, let's just drop it.  As far as I can tell, the only thing
that skipping lint_pkgver() really enables is letting the PKGBUILD author
write `pkgver=` in the initial version, and letting pkgver() fill it in.
They can just start writing `pkgver=0` for that workflow.

Signed-off-by: Allan McRae <allan@archlinux.org>

scripts/libmakepkg/lint_pkgbuild/pkgver.sh.in

@@ -44,10 +44,5 @@ check_pkgver() {
 }
 
 lint_pkgver() {
-	if (( PKGVERFUNC )); then
-		# defer check to after getting version from pkgver function
-		return 0
-	fi
-
 	check_pkgver "$pkgver"
 }