zlib, remove static library (#7584)

sys-libs/zlib/zlib-1.2.13.recipe

@@ -12,7 +12,7 @@ reduced, if necessary, at some cost in compression."
 HOMEPAGE="http://www.zlib.net/"
 COPYRIGHT="1995-2017 Jean-loup Gailly and Mark Adler"
 LICENSE="Zlib"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="http://zlib.net/zlib-$portVersion.tar.xz"
 CHECKSUM_SHA256="d14c38e313afc35a9a8760dadf26042f51ea0f5d154b0630a31da0540107fb98"
 PATCHES="zlib-$portVersion.patchset"
@@ -74,6 +74,9 @@ INSTALL()
 {
 	make -C build install
 
+	# remove static library
+	rm $libDir/libz.a
+
 	prepareInstalledDevelLib libz
 
 	# devel package