Remove Graphical_Overmap mod + Add errorless mod removal

[Procyonae]

Summary

None

Purpose of change

The mod in general has been superceded by actual tileset overmap support
The look it used has been superceded by Larwick_Overmap
Anyone still using this is crazy

Describe the solution

Deletes the mod

Replaces the error if you load a mod that's not installed with a query to optionally remove it from the active mod list, with a set of removed mods that changes the message to make it clear that it's been removed and isn't a launcher etc problem.
Removes load_packs unusued return value rather than updating the return

Describe alternatives you've considered

Housing obsoleted mods in the repo indefinitely

On "No" having a second query to abort the load
Not differentiating recently removed mods and otherwise missing mods
Trying to make the removed mod list json in /data/core or something but that seems unnecessary

Testing

Started a world with MMA active, saved, deleted the mod, loaded, got the query and said no, saved, got the query and said yes, saved, didn't get the query as expected

Additional context

I'm glad we don't have to live with a menu that looks like this to achieve a cool overmap anymore ;D

[Procyonae]

Actually adding proper error free removal for mods should be pretty easy, I'll look into adding that

Edit: Since this I remembered data/mods/replacements.json exists but I think providing an actual prompt rather than just automatically removing the mods is better so players with weird installs can tell when something's gone wrong

[github-actions]

Spell checker encountered unrecognized words in the in-game text added in this pull request. See below for details.

Click to expand

• Mod %s has been removed, remove it from this world's modlist?
• Mod %s not found in mods folder, remove it from this world's modlist?

This alert is automatically generated. You can simply disregard if this is inaccurate, or (optionally) you can also add the new words to tools/spell_checker/dictionary.txt so they will not trigger an alert next time.

Hints for adding a new word to the dictionary

• If the word is normally in all lowercase, such as the noun word or the verb does, add it in its lower-case form; if the word is a proper noun, such as the surname George, add it in its initial-caps form; if the word is an acronym or has special letter case, such as the acronym CDDA or the unit mW, add it by preserving the case of all the letters. A word in the dictionary will also match its initial-caps form (if the word is in all lowercase) and all-uppercase form, so a word should be added to the dictionary in its normal letter case even if used in a different letter case in a sentence.
• For a word to be added to the dictionary, it should either be a real, properly-spelled modern American English word, a foreign loan word (including romanized foreign names), or a foreign or made-up word that is used consistently and commonly enough in the game. Intentional misspelling (including eye dialect) of a word should not be added unless it has become a common terminology in the game, because while someone may have a legitimate use for it, another person may spell it that way accidentally.