[5.5] Removed optimize command

[DCzajkowski]

Removed optimize command, since it was left empty anyway. Closes #20767

[sisve]

It is being deprecated for one release, according to laravel/ideas#383

[DCzajkowski]

It is not a breaking change (since it won't destroy any codebase) and it isn't really deprecated. It is softly removed currently, which makes no sense whatsoever.

[taylorotwell]

We'll remove it in 5.6 and note in the upgrade guide for 5.5. It can break deployment scripts that are calling it if we remove it without warning.

[DCzajkowski]

What about making it write to the console?:

[Warning] Deprecated ...

[decadence]

Can somebody explain why this was deprecated and what is alternative?

[timacdonald]

@decadence i think I remember Taylor maybe saying on a podcast that due to performance improvements in PHP itself (OPCache and whatnot) the command didn't really have any benifit anymore. Don't quote me on that...

[decadence]

@timacdonald thanks

[josegus]

so.. should we still using config:cache, route: cache.. ?

[josegus]

I've just created a new laravel 8.1 through laravel installer, and "artisan optimize" is in the command list

[me-shaon]

@josegus The optimize command was again added later through this PR: #23468