Removed a dead link

[arminpatel]

Removed a dead link (C project based tutorial) from additional resources section

Description

The "C project based tutorial" link doesn't work anymore. Most probably the owner of the repo has deleted his account.

Motivation and Context

It removes a dead link from the resources

#344

How Has This Been Tested?

Just removed a link doesn't need much testing. But I tried to access the link using a VPN just to make sure it is not blocked just just for my region and gives the same 404 error.

No effect on other areas

Types of changes

• Content Update (change which fixes an issue or updates an already existing submission)
• New Article (change which adds functionality)
• Documentation change

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have made checks to ensure URLs and other resources are valid

[enkeyz]

Thanks!