Remove two tests that depend on assembla.com (#1593)

Returned HTTP 524 is a recent test

Test is not valuable enough to waste time diagnosing it

src/test/java/hudson/plugins/git/browser/AssemblaWebDoCheckURLTest.java

@@ -60,20 +60,6 @@ public void testPathLevelChecksOnRepoUrlInvalidPathSyntax() throws Exception {
         assertThat(assemblaWebDescriptor.doCheckRepoUrl(project, url).getLocalizedMessage(), is("Invalid URL"));
     }
 
-    @Test
-    public void testPathLevelChecksOnRepoUrlValidURLNullProject() throws Exception {
-        String url = "https://app.assembla.com/space/git-plugin/git/source";
-        assertThat(assemblaWebDescriptor.doCheckRepoUrl(null, url), is(FormValidation.ok()));
-    }
-
-    @Test
-    public void testPathLevelChecksOnRepoUrlUnableToConnect() throws Exception {
-        // Syntax issue related specific to Assembla
-        String url = "https://app.assembla.com/space/git-plugin/git/source/";
-        assertThat(assemblaWebDescriptor.doCheckRepoUrl(project, url).getLocalizedMessage(),
-                is("Exception reading from Assembla URL " + url + " : ERROR: Unable to connect " + url));
-    }
-
     @Test
     public void testPathLevelChecksOnRepoUrlSupersetOfAssembla() throws Exception {
         java.util.Random random = new java.util.Random();