Remove old invalid test, fix previous commit

Author: Stephane Landelle

api/src/test/java/org/asynchttpclient/async/AsyncProvidersBasicTest.java

@@ -1550,16 +1550,6 @@ public void getShouldAllowBody() throws IllegalArgumentException, IOException {
         }
     }
 
-    @Test(groups = { "standalone", "default_provider" }, expectedExceptions = IllegalArgumentException.class)
-    public void headShouldNotAllowBody() throws IllegalArgumentException, IOException {
-        AsyncHttpClient client = getAsyncHttpClient(null);
-        try {
-            client.prepareHead(getTargetUrl()).setBody("Boo!").execute();
-        } finally {
-            client.close();
-        }
-    }
-
     @Test(groups = { "standalone", "default_provider" }, expectedExceptions = { IllegalArgumentException.class })
     public void invalidUri() throws Exception {
         AsyncHttpClient client = getAsyncHttpClient(null);