Cleans up unneceesary bytes from x.encoding.asn module

[blackshirt]

This PR contains some small cleans up of unnecessary bytes from x.encoding.asn1 module, includes :

• Cleaning up some examples to align with recent fixed issues by greats work by @felipensp , 22901, 22855, 22721
• Removed extra test (this is not really needed), it test is for x509 certificates, where i have it on other branch.
• Clearing some bits of unnecessary pieces of code.

Thanks,

_{Huly®: V_0.6-21374}

[spytheman]

There is no need to delete the _test.v files, unless you do want that; they are skipped, when others do import x.encoding.asn1, and will not affect the resource usage of compilations.

[blackshirt]

There is no need to delete the _test.v files, unless you do want that; they are skipped, when others do import x.encoding.asn1, and will not affect the resource usage of compilations.

Its actually for x509 certificate parser i'm working on, so its why i'm make pr to remove it.