JSR223InteropTest does not need to set the Ruby home

* It creates the expected warning that the home is not found,
  but the tests work fine without.

Author: eregon

src/test/java/org/truffleruby/JSR223InteropTest.java

@@ -9,14 +9,11 @@
  */
 package org.truffleruby;
 
-import org.junit.After;
-import org.junit.Before;
 import org.junit.Test;
 import org.truffleruby.fixtures.FluidForce;
 import org.truffleruby.services.scriptengine.TruffleRubyScriptEngine;
 import org.truffleruby.services.scriptengine.TruffleRubyScriptEngineFactory;
 import org.truffleruby.shared.TruffleRuby;
-import org.truffleruby.shared.options.OptionsCatalog;
 
 import javax.script.Bindings;
 import javax.script.Compilable;
@@ -32,16 +29,6 @@
 
 public class JSR223InteropTest {
 
-    @Before
-    public void before() {
-        System.setProperty("polyglot." + OptionsCatalog.HOME.getName(), System.getProperty("user.dir"));
-    }
-
-    @After
-    public void after() {
-        System.clearProperty("polyglot." + OptionsCatalog.HOME.getName());
-    }
-
     @Test
     public void testVersion() {
         assertEquals(TruffleRuby.getEngineVersion(), new TruffleRubyScriptEngineFactory().getEngineVersion());