[GR-14746] Move the Ruby-JavaScript backtrace test to graalvm-tests

Author: eregon

test/truffle/integration/backtraces.sh

@@ -5,11 +5,5 @@ source test/truffle/common.sh.inc
 for f in test/truffle/integration/backtraces/*.rb
 do
   echo "$f"
-  if [ "$(basename "$f")" != "javascript.rb" ]; then
-    jt ruby --no-core-load-path "$f"
-  fi
+  jt ruby --no-core-load-path "$f"
 done
-
-if [ "$(jt ruby -e 'p TruffleRuby.native?')" = "false" ]; then
-  jt ruby --no-core-load-path --polyglot --experimental-options --single-threaded test/truffle/integration/backtraces/javascript.rb
-fi