drm/i915/hdcp: Remove additional timing for reading mst hdcp message

Now that we have moved back to direct reads the additional timing
is not required hence this can be removed.

--v2
-Add Fixes tag [Ankit]

Fixes: 3974f9c ("drm/i915/hdcp: Adjust timeout for read in DPMST Scenario")
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240223081453.1576918-10-suraj.kandpal@intel.com
(cherry picked from commit 429ccbd)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Author: surajk8

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

@@ -549,13 +549,8 @@ int intel_dp_hdcp2_read_msg(struct intel_connector *connector,
 
 		/* Entire msg read timeout since initiate of msg read */
 		if (bytes_to_recv == size - 1 && hdcp2_msg_data->msg_read_timeout > 0) {
-			if (intel_encoder_is_mst(connector->encoder))
-				msg_end = ktime_add_ms(ktime_get_raw(),
-						       hdcp2_msg_data->msg_read_timeout *
-						       connector->port->parent->num_ports);
-			else
-				msg_end = ktime_add_ms(ktime_get_raw(),
-						       hdcp2_msg_data->msg_read_timeout);
+			msg_end = ktime_add_ms(ktime_get_raw(),
+					       hdcp2_msg_data->msg_read_timeout);
 		}
 
 		ret = drm_dp_dpcd_read(aux, offset,