Unused inline function

[BsAtHome]

Adding the S-curve trajectory planner with jerk limiting (#3683) introduced an inline function in emc/tp/tp.c line 359 STATIC inline double tpGetScaledAccel(...) that is never used in the code.

It may be an oversight, a typo or development leftovers. Someone with knowledge of this code should review it and determine what should be done with it.

[Sigma1912]

@grandixximo

[grandixximo]

This will double check with YangYang, probably not needed, but we intend on improving arcs/parabolas interpolation, maybe we can still reuse it, pending...

[mika4128]

We will remove this code. The function in question was not created by us—it was originally introduced by Robert W. Ellenberg on November 8, 2013, and later removed on January 10, 2019, when it was moved to blendmath.c. However, due to a divergence between our previous version and the upstream master branch, the code was inadvertently reintroduced.