Remove outdated bullet point

[Sleitnick]

Changes

Removes an outdated bullet point regarding the use of task.wait/task.spawn/task.delay. It seems this is a holdover from the older global functions wait/spawn/delay, and that someone had simply added the task prefix to those older functions in this paragraph (you can see this was forgotten on the last reference to spawn()).

To the best of my understanding, the newer task library has no throttling issues like the older global functions, and thus the docs should not be recommending against their usage.

Relevant links:

• https://devforum.roblox.com/t/task-library-now-available/1387845
• https://create.roblox.com/docs/reference/engine/libraries/task

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