They changed the Z_RAISE_BEFORE_PROBING to something a little different, at least in 1.1.0-RC6. It is now here:

Code:
// @section homing
#define MIN_Z_HEIGHT_FOR_HOMING 6   // (in mm) Minimal z height before homing (G28) for Z clearance above the bed, clamps, ...
                                    // Be sure you have this distance over your Z_MAX_POS in case.
This will essentially accomplish the same thing as the old define.