[OpenMP]Fix PR51349: Remove AlwaysInline for if regions.

After D94315 we add the `NoInline` attribute to the outlined function to handle
data environments in the OpenMP if clause. This conflicted with the `AlwaysInline`
attribute added to the outlined function. for better performance in D106799.
The data environments should ideally not require NoInline, but for now this
fixes PR51349.

Reviewed By: mikerice

Differential Revision: https://reviews.llvm.org/D107649

(cherry picked from commit 41a6b50c)