Still no need for osl_setCommandArgs

(TOCTOU and all)

Change-Id: I81253c8790b631117634bafa4eea65991a975ba0
[API CHANGE] Remove osl_setCommandArgs

...it was added late in the LO 3.3 cycle apparently by error.

While this is strictly speaking an incompatible change, no client code should
ever have called this deprecated, internal functionality anyway.  An aborting
stub is left in place for soname stability.

Change-Id: Ibbc96ccf76a07a80d732a0713c95ff7b6bf1e528