Do not consider missing token descriptions as erroneous

The hook_token_info() documentation does not specify that token descriptions are optional, but as a best practice descriptions should never be required if there already is a shorter human-readable label/title available (what more is there to say about a node title than "Title", for instance?). I maintain several modules that follow this practice, and I've received reports from users that Token.module keeps telling them about these missing descriptions.

I was hoping you could remove this check and consider a missing or empty description as valid. See #1941552: [Policy, no patch] Never require descriptions if a title/label is already required and #1911768: Make token and token type descriptions optional for related core issues.