Remove an unnecessary instruction from stack check code.

The intention may have been to set the flags based on the return value, but that is not part of the calling convention and nothing should be relying on it.

Gen.pas

@@ -5668,7 +5668,6 @@ procedure GenTree {op: icptr};
          GenImplied(m_ply);
          GenNative(m_sty_dir, direct, stackLoc, nil, 0);
          end; {if}
-      GenImplied(m_tay);
       end {if}
    else if (saveStack and (op^.q >= 0)) or (op^.q > 0) then begin
       stackSaveDepth := stackSaveDepth - 1;