drm/i915: Drop WaApplyL3ControlAndL3ChickenMode:hsw

WaApplyL3ControlAndL3ChickenMode is only relevant to early HSW
steppings..
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: NRodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_pm.c

@@ -4765,12 +4765,6 @@ static void haswell_init_clock_gating(struct drm_device *dev)
 
 	ilk_init_lp_watermarks(dev);
 
-	/* WaApplyL3ControlAndL3ChickenMode:hsw */
-	I915_WRITE(GEN7_L3CNTLREG1,
-			GEN7_WA_FOR_GEN7_L3_CONTROL);
-	I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER,
-			GEN7_WA_L3_CHICKEN_MODE);
-
 	/* L3 caching of data atomics doesn't work -- disable it. */
 	I915_WRITE(HSW_SCRATCH1, HSW_SCRATCH1_L3_DATA_ATOMICS_DISABLE);
 	I915_WRITE(HSW_ROW_CHICKEN3,