Minor build-time updates

src/etc/portage/package.keywords

@@ -32,11 +32,7 @@
 # Split gnuplot dependency (#425622)
 =sci-libs/libqalculate-0.9.7*
 
-# Stable fails to build (#432766)
-=dev-libs/opensc-0.12.2*
-
 # Firmware
-sys-apps/microcode-data
 sys-firmware/amd-ucode
 net-wireless/b43-firmware
 net-wireless/b43-fwcutter