security/py-{letsencrypt,acme}: Update to 0.3.0

Common:

• Update PORTVERSION and distinfo checksum (0.3.0) [1]
• Use PORTVERSION over DISTVERSION (not necessary at the moment)
• Update dependency entries to match those in setup.py
  • match minimum versions, remove version if not specified there
  • requests has been removed from letsencrypt, acme depends on it

py-letsecnrypt:

• Remove setup.py patch (upstreamed) [1]

py-acme:

• Enable NO_ARCH

PR: 206397
Submitted by: pkubaj@anongoth.pl [1]
Reviewed by: cpm (maintainer, acme)
Approved by: cpm (maintainer, acme)