Delete a bunch of NPAPI layout tests.

LayoutTests/plugins/destroy-stream-twice-expected.txt

Index: LayoutTests/plugins/destroy-stream-twice-expected.txt
diff --git a/LayoutTests/plugins/destroy-stream-twice-expected.txt b/LayoutTests/plugins/destroy-stream-twice-expected.txt
deleted file mode 100644
index 0beb8245936cfc886690679e3efe4132f3b0a9c2..0000000000000000000000000000000000000000
--- a/LayoutTests/plugins/destroy-stream-twice-expected.txt
+++ /dev/null
@@ -1,19 +0,0 @@
-Test for http://bugs.webkit.org/show_bug.cgi?id=13203: REGRESSION: Repro crash in -[WebBaseNetscapePluginView(WebNPPCallbacks) destroyStream:reason:] navigating away from page with DivX movie plugin
-
-On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-
-
-PASS successfullyParsed is true
-
-TEST COMPLETE
-destroyStream() returns zero to indicate success, or a non-zero error code to indicate failure
-PASS document.getElementById('plugin').hasStream is true
-PASS document.getElementById('plugin').destroyStream() is 2
-PASS document.getElementById('plugin').destroyStream() is 2
-PASS document.getElementById('plugin').destroyNullStream() is 2
-PASS: You didn't crash.
-
-PASS successfullyParsed is true
-
-TEST COMPLETE
-