Delete a bunch of NPAPI layout tests.

LayoutTests/plugins/npruntime/set-property.html

Index: LayoutTests/plugins/npruntime/set-property.html
diff --git a/LayoutTests/plugins/npruntime/set-property.html b/LayoutTests/plugins/npruntime/set-property.html
deleted file mode 100644
index 7ff9fb9634cc91a4078a34c0252728c7b4422287..0000000000000000000000000000000000000000
--- a/LayoutTests/plugins/npruntime/set-property.html
+++ /dev/null
@@ -1,15 +0,0 @@
-<embed name="plg" type="application/x-webkit-test-netscape" width=100 height=100></embed>
-<p>Test for <i><a href="https://bugs.webkit.org/show_bug.cgi?id=30295">https://bugs.webkit.org/show_bug.cgi?id=30295</a>
-REGRESSION (r48492): Gmail voice and video chat doesn't work</i>.</p>
-<p id="result">FAIL: Text did not run</p>
-<script>
-    if (window.testRunner)
-        testRunner.dumpAsText();
-
-    plg.eventLoggingEnabled = true;
-    document.getElementById("result").innerText = plg.eventLoggingEnabled
-        ? "PASS: Successfully set a plugin's property"
-        : "FAIL: Failed to set a plugin's property";
-
-    plg.eventLoggingEnabled = false;
-</script>