docs: Removing erroneous FAQ timeout message

[john-bodley]

SUMMARY

This PR removes an erroneous entry in the FAQ regarding timeouts. Firstly the superset runserver command doesn't exist, and secondly the guicorn timeout (which isn't explicitly mentioned but possibly inferred) is related to the timeout of idle workers rather than web requests.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

CI.

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #20853 (ebc3f58) into master (e3c6380) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #20853   +/-   ##
=======================================
  Coverage   66.30%   66.30%           
=======================================
  Files        1757     1757           
  Lines       66860    66860           
  Branches     7077     7077           
=======================================
  Hits        44332    44332           
  Misses      20719    20719           
  Partials     1809     1809           

Flag	Coverage Δ
hive	53.26% <ø> (ø)
javascript	51.95% <ø> (ø)
mysql	81.07% <ø> (ø)
postgres	81.15% <ø> (ø)
presto	53.12% <ø> (ø)
python	81.59% <ø> (ø)
sqlite	79.76% <ø> (ø)
unit	50.26% <ø> (ø)

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