brother-brscan3: definitely this does not need sane-devel at run-time.

srcpkgs/brother-brscan3/template

@@ -1,14 +1,14 @@
 # Template file for 'brother-brscan3'
 pkgname=brother-brscan3
 version=0.2.11
-revision=3
+revision=4
 maintainer="Carlo Dormeletti <carloDOTdormelettiATaliceDOTit>"
 homepage="http://support.brother.com/g/b/index.aspx"
 license="GPL-2"
 short_desc=" Scanner driver for the brother DCP-197C printer/scanner"
 only_for_archs="i686 x86_64"
 makedepends="sane-devel"
-depends="${makedepends}"
+depends="sane"
 create_wrksrc=yes
 
 if [ "$XBPS_TARGET_MACHINE" = "x86_64" ]; then