Remove @internal annotation from PHPMock::getMockBuilder

[php-mock]

Remove @internal annotation from PHPMock::getMockBuilder

[malkusch]

I use the @internal annotation to mark

that the associated Structural Elements are used purely for the internal workings of this piece of software.

In particular to avoid apearing such internal details in the API documentation.

I actually don't need those abstract methods in the trait. I have them there for convenience, so that the code makes sense while calling those methods from the expected PHPUnit API.

But for you as a PHPUnit user they are part of the public API of PHPUnit. Actually I don't know what should be a correct behaviour for this case. I don't think it's well defined in PHPDoc and last time I checked, this FIG soap was about to implode or at least PSR-5 died. Ok, before I make any action on that, I need some authoritative information about the correct behaviour. I'll try to get that from https://github.com/phpDocumentor/phpDocumentor2.

[emirb]

@malkusch Can you fully remove those abstract methods in the trait, as you said you don't need them actually? They add no value and just pollute inspections in PhpStorm.

[michalbundyra]

@emirb Please see #27, methods from trait are there removed.

[emirb]

Thanks @webimpress!