drm/i915/dp: No need to poll FEC Enable Live bit

The Bspec does not mention polling the FEC Enable
Live status bit. That is only there for debug purposes.
So remove the polling from driver.

Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: NManasi Navare <manasi.d.navare@intel.com>
Reviewed-by: NAnkit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201125072634.27664-1-manasi.d.navare@intel.com

drivers/gpu/drm/i915/display/intel_ddi.c

@@ -3512,12 +3512,6 @@ static void intel_ddi_enable_fec(struct intel_encoder *encoder,
 	val = intel_de_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
 	val |= DP_TP_CTL_FEC_ENABLE;
 	intel_de_write(dev_priv, dp_tp_ctl_reg(encoder, crtc_state), val);
-
-	if (intel_de_wait_for_set(dev_priv,
-				  dp_tp_status_reg(encoder, crtc_state),
-				  DP_TP_STATUS_FEC_ENABLE_LIVE, 1))
-		drm_err(&dev_priv->drm,
-			"Timed out waiting for FEC Enable Status\n");
 }
 
 static void intel_ddi_disable_fec_state(struct intel_encoder *encoder,