tools: remove gyp test directory

[shigeki]

gyp tests are not performed in iojs and it's size about 8M bytes. We can check gyp tests outside of iojs and reduce the size of the repository by removing them.
cf. #1325 (comment) ,

[jbergstroem]

LGTM

[jbergstroem]

Replying to @Fishrock123's comment in #1325:

I think it was discussed previously that the v8 suite should be untracked..

The v8 directories (and others) are removed when creating tarballs. Since gyp introduced test with this commit I'm more reluctant to have it stay. I guess the unfortunate action was letting it in to the git tree since we now grown the git tree -- I personally don't know a way of removing stuff without rewriting commit history.

[Fishrock123]

I guess the unfortunate action was letting it in to the git tree since we now grown the git tree -- I personally don't know a way of removing stuff without rewriting commit history.

This is something I wish git had an option to disable bits of past history for, even if it technically break things at specific commits without downloading/getting extra repo data.

It gets really bad if you ever deal with already-compressed data in git. (jpegs, tgz, etc)

[Fishrock123]

LGTM also

[rvagg]

lgtm

[shigeki]

Thanks. Landed in 644ece1 .