Retire Regexp::FactorAlternationRecursive() round 4.

It is redundant: "flattened" bytecode achieves the same result!

Change-Id: I8e54b3945da2a84d5cbb946cff0c1c9ccb6d184f
Reviewed-on: https://code-review.googlesource.com/20730
Reviewed-by: Paul Wankadia <junyer@google.com>
3 files changed