Fix as #12/#16 by removing AllowPartiallyTrustedCallers attribute.

[lauxjpn]

This issue has been addressed multiple times, though nobody seemed to make it through the OCA process:

fix EF 6 partially trusted callers #12
Remove the AllowPartiallyTrustedCallers attribute #16

So here my two cents with the same solution and the OCA in place.

I confirm the code being submitted is offered under the terms of the OCA, and that I am authorized to contribute it.

[mysql-oca-bot]

Hi, thank you for your contribution. Please confirm this code is submitted under the terms of the OCA (Oracle's Contribution Agreement) you have previously signed by cutting and pasting the following text as a comment:
"I confirm the code being submitted is offered under the terms of the OCA, and that I am authorized to contribute it."
Thanks

[lauxjpn]

I confirm the code being submitted is offered under the terms of the OCA, and that I am authorized to contribute it.

[0xced]

This issue is now tracked on http://bugs.mysql.com/bug.php?id=89134

I think you should close your pull request to avoid confusion.

[mysql-oca-bot]

Hi, thank you for your contribution. Your code has been assigned to an internal queue. Please follow
bug http://bugs.mysql.com/bug.php?id=89137 for updates.
Thanks