Remove webarchive tests.

LayoutTests/webarchive/archive-empty-frame-source-expected.webarchive

Index: LayoutTests/webarchive/archive-empty-frame-source-expected.webarchive
diff --git a/LayoutTests/webarchive/archive-empty-frame-source-expected.webarchive b/LayoutTests/webarchive/archive-empty-frame-source-expected.webarchive
deleted file mode 100644
index a7a220c4a82a0b806f49225ac4149209f58ba984..0000000000000000000000000000000000000000
--- a/LayoutTests/webarchive/archive-empty-frame-source-expected.webarchive
+++ /dev/null
@@ -1,54 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>WebMainResource</key>
-	<dict>
-		<key>WebResourceData</key>
-		<string>&lt;!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
-        "http://www.w3.org/TR/html4/loose.dtd"&gt;
-&lt;html&gt;
-&lt;head&gt;
-&lt;title&gt;Empty iFrame causes archive exception&lt;/title&gt;
-&lt;script&gt;
-    if (window.testRunner)
-        testRunner.dumpSourceAsWebArchive();
-&lt;/script&gt;
-&lt;/head&gt;
-&lt;body&gt;
-
-&lt;p&gt;
-Here lies an `iframe` with no content/src:
-&lt;p&gt;
-
-&lt;iframe id="emptyFrame" style="width: 100%; height: 100px; border: solid 2px red;"&gt;
-&lt;/iframe&gt;
-
-&lt;/body&gt;
-&lt;/html&gt;
-</string>
-		<key>WebResourceFrameName</key>
-		<string></string>
-		<key>WebResourceMIMEType</key>
-		<string>text/html</string>
-		<key>WebResourceURL</key>
-		<string>file:///LayoutTests/webarchive/archive-empty-frame-source.html</string>
-	</dict>
-	<key>WebSubframeArchives</key>
-	<array>
-		<dict>
-			<key>WebMainResource</key>
-			<dict>
-				<key>WebResourceData</key>
-				<string></string>
-				<key>WebResourceFrameName</key>
-				<string>emptyFrame</string>
-				<key>WebResourceMIMEType</key>
-				<string>text/html</string>
-				<key>WebResourceURL</key>
-				<string>about:blank</string>
-			</dict>
-		</dict>
-	</array>
-</dict>
-</plist>