core/steam: drop maliit-keyboard

Signed-off-by: Christian Stewart <christian@aperture.us>

Author: paralin

configs/core/steam/buildroot_ext/package/skiff-core-steam/coreenv/Dockerfile

@@ -33,7 +33,6 @@ RUN \
     unzip \
     usbutils \
     qt5-tools \
-    maliit-keyboard \
     kscreen \
     wget \
   && rm -rf /var/cache/*