etc/kaleidoscope-builder.conf: Remove the macOS workaround for virtual

The workaround was put in place as an attempt to get virtual builds going on
macOS, natively. It wasn't enough, and it doesn't work, so lets drop it.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

etc/kaleidoscope-builder.conf

@@ -151,12 +151,6 @@ if [ "${uname_S}" = "Darwin" ]; then
         fi
     }
 
-    if [ "${ARCH}" = "virtual" ]; then
-        COMPILER_PREFIX="x86_64-apple-darwin19-"
-        COMPILER_SUFFIX="-10"
-        AR_BASENAME="gcc-ar"
-    fi
-
 elif [ "${uname_S}" = "FreeBSD" ]; then
 
     find_device_port() {