GH-407: remove removing certificates functions in xcode post scripts

[knight9999]

Platforms affected

ios

What does this PR do?

To fix #407 with automatic provioning.
This PR fixs the issue that ios-deploy (cordova run --device) can not work with automatic provisoning.

This PR simply remove following lines

shell.rm('-rf', path.join(dstDir, '_CodeSignature'));
shell.rm('-rf', path.join(dstDir, 'PkgInfo'));
shell.rm('-rf', path.join(dstDir, 'embedded.mobileprovision'));

in cordova/lib/copy-www-build-step.js.

I am not sure why that codes are here.
But I image that the old version of the cordova use xcrun for the certification after building process. In such situation, the above codes are necessary.

However I found that these codes lead strange behavior with automatic provisioning in ios-deploy (in cordova run --device) as reported in #407 .

What testing has been done on this change?

I test as following on my local mac (mojave).

1. cordova run --device with automatic provisioning using Xcode 10.1.
2. cordova run --device with manual provioning using Xcode 10.1.
3. cordova run --device with automatic provisioning using Xcode 9.4.1.
4. cordova run --device with manual provioning using Xcode 9.4.1.

All they works well.

npx cordova@nightly 
### Checklist
- [ ] [Reported an issue](http://cordova.apache.org/contribute/issues.html) in the JIRA database
- [x] Commit message follows the format: "CB-3232: (android) Fix bug with resolving file paths", where CB-xxxx is the JIRA ID & "android" is the platform affected.
- [ ] Added automated test coverage as appropriate for this change.

[codecov-io]

Codecov Report

Merging #508 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #508   +/-   ##
=======================================
  Coverage   74.75%   74.75%           
=======================================
  Files          11       11           
  Lines        1822     1822           
=======================================
  Hits         1362     1362           
  Misses        460      460

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[dpogue]

Just ran an export in Xcode 10 (in the Xcode app) with these changes and automatic provisioning and it worked! 🎉

[erisu]

LGTM

[jpike88]

Nice, how will I know as soon as the next release contains this?

[dpogue]

Note: This also resolves CB-14264

[janpio]

@jpike88 You can follow releases of repositories on Github (leftmost button at the top, next to "Star" and "Fork"), there will also be a blog post at blog.cordova.io.