Do not implement EventTarget on SVGElementInstance

LayoutTests/svg/custom/use-elementInstance-event-target.svg

Index: LayoutTests/svg/custom/use-elementInstance-event-target.svg
diff --git a/LayoutTests/svg/custom/use-elementInstance-event-target.svg b/LayoutTests/svg/custom/use-elementInstance-event-target.svg
deleted file mode 100644
index 87e7de4688b1fb2e52e209d78f192f5ce4e56bcc..0000000000000000000000000000000000000000
--- a/LayoutTests/svg/custom/use-elementInstance-event-target.svg
+++ /dev/null
@@ -1,57 +0,0 @@
-<svg version="1.1" baseProfile="basic" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" onload="runRepaintAndPixelTest()">
-  <script xlink:href="../../fast/repaint/resources/text-based-repaint.js"/>
-  <title>Test for SVGElementInstance::correspondingElement and SVGElementInstance::correspondingUseElement</title>
-
-  <defs>
-    <rect id="reference" x="240" y="1" width="239" height="358" />
-    <script type="text/ecmascript">
-    <![CDATA[
-      function repaintTest() {
-          if (window.eventSender) {
-              testRunner.waitUntilDone();
-              eventSender.mouseMoveTo(250, 50);
-              eventSender.mouseDown();
-              eventSender.mouseUp();
-          }
-      }
-
-      function test (event) {
-        // get pointers to use and reference elements
-        var reference = document.getElementById('reference');
-        var use = document.getElementById('use');
-
-        // initialize the pass count and colors
-        var pass = 0;
-        var colors = ['red', 'orange', 'green'];
-
-        // event.target.correspondingUseElement test
-        if (event.target.correspondingUseElement == use) {
-          document.getElementById('assertion_1').setAttributeNS(null, 'fill', 'green');
-          pass++;
-        }
-
-        // event.target.correspondingElement test
-        if (event.target.correspondingElement == reference) {
-          document.getElementById('assertion_2').setAttributeNS(null, 'fill', 'green');
-          pass++;
-        }
-
-        // show the result
-        use.setAttributeNS(null, 'fill', colors[pass]);
-
-        if (window.testRunner)
-          testRunner.notifyDone();
-      }
-    ]]>
-    </script>
-  </defs>
-
-  <use id="use" xlink:href="#reference" onclick="test(evt)" fill="grey" />
-
-  <text transform="translate(5,20)">Click on the grey rectangle to start</text>
-  <text id="assertion_1" fill="red" transform="translate(5,80)">Test for correspondingUseElement</text>
-  <text id="assertion_2" fill="red" transform="translate(5,110)">Test for correspondingElement</text>
-
-  <rect id="test-frame" x="1" y="1" width="478" height="358" fill="none" stroke="#000"/>
-
-</svg>