Bug 1357846 - Remove some dead code which triggers errors at sandbox level 3 r=baku

This code only became dead very recently; in the first patch improving this
issue (which fixed an underlying issue with the code, but not the tests).

r=baku

MozReview-Commit-ID: 3QP5LrNPstJ

--HG--
extra : rebase_source : 845856d77640cf94b074dc0b9f976ae1a1fb927a

dom/html/test/test_filepicker_default_directory.html

@@ -21,10 +21,6 @@ SimpleTest.waitForExplicitFinish();
 const { Cc: Cc, Ci: Ci } = SpecialPowers;
 
 // Platform-independent directory names are #define'd in xpcom/io/nsDirectoryServiceDefs.h
-var defaultUploadDirectory = Cc["@mozilla.org/file/directory_service;1"]
-                            .getService(Ci.nsIDirectoryService)
-                            .QueryInterface(Ci.nsIProperties)
-                            .get("Desk", Ci.nsIFile);
 
 // When we want to test an upload directory other than the default, we need to
 // get a valid directory in a platform-independent way. Since NS_OS_DESKTOP_DIR
@@ -35,7 +31,6 @@ var customUploadDirectory = Cc["@mozilla.org/file/directory_service;1"]
                             .get("TmpD", Ci.nsIFile);
 
 // Useful for debugging
-//info("defaultUploadDirectory" + defaultUploadDirectory.path);
 //info("customUploadDirectory" + customUploadDirectory.path);
 
 var MockFilePicker = SpecialPowers.MockFilePicker;