Fix deprecation warnings on junit.framework.Assert

Use org.junit.Assert instead everywhere. Also fix some other minor warnings

js/js.tests/test/org/jetbrains/k2js/test/config/JsUnitTestReporter.java

@@ -17,11 +17,11 @@
 package org.jetbrains.k2js.test.config;
 
 import com.intellij.util.containers.ContainerUtil;
-import junit.framework.Assert;
 import junit.framework.TestCase;
 import junit.framework.TestSuite;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.junit.Assert;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -118,7 +118,6 @@ public class JsUnitTestReporter {
                         Assert.fail(sb.toString());
                     }
                     eraseTestInfo(getName());
-                    Assert.assertTrue(result);
                 }
             });
         }

js/js.tests/test/org/jetbrains/k2js/test/semantics/NumberTest.java

@@ -16,9 +16,9 @@
 
 package org.jetbrains.k2js.test.semantics;
 
-import junit.framework.Assert;
 import org.jetbrains.k2js.facade.exceptions.TranslationInternalException;
 import org.jetbrains.k2js.test.SingleFileTranslationTest;
+import org.junit.Assert;
 
 public final class NumberTest extends SingleFileTranslationTest {
     public NumberTest() {
@@ -55,10 +55,11 @@ public final class NumberTest extends SingleFileTranslationTest {
         checkFooBoxIsOk();
     }
 
-    public void testHexademicalConstant() throws Exception {
+    public void testHexadecimalConstant() throws Exception {
         try {
             fooBoxTest();
-        } catch (TranslationInternalException e) {
+        }
+        catch (TranslationInternalException e) {
             Throwable cause = e.getCause();
             Assert.assertTrue(cause instanceof IllegalStateException);
             Assert.assertTrue(cause.getMessage().startsWith("Unsupported long constant "));