Remove unused code from PR #1475

TBR=@arv

Review URL: https://api.github.com/repos/google/traceur-compiler/issues/1479

Closes #1479.
Allow >> in type generics syntax

We support this in a similar way to the way parsing regexps work.
When we look for the `>` we let the scanner treat `>>` as `>` and
decrease the position of the scanner so that next token it sees
starts after the first `>`.

Fixes #1467
Allow .js at the end of module names

Issue #1221
0.0.74
Use .js for module names

Issue #1221
Line endings
Add --atscript option

Alias for:
  --types
  --annotations
  --memberVariables

Closes #1474
Accept *.ats extension if --atscript option set
Add text=auto to .gitattributes.
See http://git-scm.com/docs/gitattributes End-of-line conversion Note
Use .js for module names

Issue #1221
Support type assertions for es6 output

fix #1442
Move test-compat-table out of make test.

Remove the git url in the package.json and put it in the make rule.
The automatic test force network access on every make test and
added more dependencies than value we got from automatic testing.
(The current data file from compat-table fails in V8 due to
SyntaxError: Duplicate data property in object literal not allowed in strict mode

Review URL: https://api.github.com/repos/google/traceur-compiler/issues/1501

Closes #1501.