Remove guards for launched 'inline-styles' experiment

[dreamofabear]

Fixes #13595.

/to @alabiaga

[alabiaga]

pls edit test/functional/test-fixed-layer.js as well.

[dreamofabear]

@alabiaga Done.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@8056da5). Click here to learn what that means.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master   #17187   +/-   ##
=========================================
  Coverage          ?   77.81%           
=========================================
  Files             ?      562           
  Lines             ?    41193           
  Branches          ?        0           
=========================================
  Hits              ?    32053           
  Misses            ?     9140           
  Partials          ?        0

Flag	Coverage Δ
#integration_tests	36.09% <0%> (?)
#unit_tests	76.86% <100%> (?)

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