[GR-15465] Simplify the list of packages to initialize at build time

* Truffle and Graal classes are always initialized at build time.

Author: eregon

mx.truffleruby/native-image.properties

@@ -11,7 +11,7 @@ LauncherClassPath = languages/ruby/truffleruby-annotations.jar:languages/ruby/tr
 Args = -H:MaxRuntimeCompileMethods=5400 \
        -H:SubstitutionResources=org/truffleruby/aot/substitutions.json \
        -H:+AddAllCharsets \
-       --initialize-at-build-time=com.oracle.graal,com.oracle.graalvm,com.oracle.svm,com.oracle.truffle,org.graalvm,org.truffleruby,org.jcodings,org.joni,jline,org.fusesource
+       --initialize-at-build-time=org.truffleruby,org.jcodings,org.joni,jline,org.fusesource
 
 JavaArgs = -Dpolyglot.engine.PreinitializeContexts=ruby \
            -Dorg.graalvm.launcher.relative.llvm.home=../lib/cext/sulong-libs