Revert Localized Carrier SPN Changes.

This patch basically reverts the changes done to spn-conf.xml here:
http://review.cyanogenmod.com/#/c/10038/ , which was then ported to
ics and jellybean branches.

The localized SPN function requires a framework change (Found here:
http://review.cyanogenmod.com/#/c/10037/), which is not
present on ics nor jellybean branches, effectively rendering the
settings useless.

Until the framework changes are present, I think it'd be best to
change this back so that users of these Chinese carriers will at
least have their carrier names displayed correctly.

Patch Set 3: Fix description links.

Change-Id: I12bcf308dd797ea7638327c33f9252a20894ad05