This removes the unnecessary setting of c-basic-offset from all
python-mode files.
This was automatically generated using
perl -pi -e 's/; *c-basic-offset: *[0-9]+//'
... on the affected files.
The bulk of these files are moz.build files but there a few others as
well.
MozReview-Commit-ID: 2pPf3DEiZqx
Now that the faster make backend is enabled by default avoiding
cross-jar.mn file conflicts, and now that individual files can't
overlap with wildcards in the same jar.mn files, which were two
main things that the "+" prefix was used for (apart from
cargo-culting), the "+" prefixes in the tree are not necessary
anymore.
