Revert "NEW: api_read_file & api_history(value)"

This reverts commit 836f23cbe6bb6a1219ec1c7509348156a5e3921f.
NEW: api_read_file & api_history(value)

Added new API read_file support: SABnzbd is an HTTP server for jpg files
downloaded through SABnzbd. Files auto-destroy after reading.
Added abaility to return the history of a single item (value parameter
support)