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This obviates the following instructions, which also explain the
concept:
https://www.chromium.org/developers/how-tos/compact-language-detector-cld-data-source-configuration

Basically, nobody ever used the non-static CLD data source and it was a
bunch of dead code hanging around that needed to be maintained. There is
no plan to use anything other than static linking for CLD at this point.

CLD2 is in maintenance mode at this point and will not be receiving any
further improvements. As we look to its replacement, the first step is
to simplify all the code for dealing with CLD.

This is a spiritual revert of this old CL:
https://codereview.chromium.org/461633002/

It was impossible to directly revert due to changes that have entered
the codebase over the past 18 months, but in principle undoes it all.

BUG=367239
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2034413003
Cr-Commit-Position: refs/heads/master@{#398851}