Revert "add temporary hack to store original unhashed guid into cached_content for debugging"

This reverts commit 8096e309a5.

include/rssfuncs.php

@@ -677,7 +677,6 @@
 							comments,
 							num_comments,
 							plugin_data,
-							cached_content,
 							author)
 						VALUES
 							('$entry_title',
@@ -692,7 +691,6 @@
 							'$entry_comments',
 							'$num_comments',
 							'$entry_plugin_data',
-							'$entry_guid',
 							'$entry_author')");
 
 					$article_labels = array();