drm/omap: remove extra manager checks on disconnect

The DSS output drivers check 'dssdev->manager' in disconnect()
functions. This check is not needed as the manager must always be set if
the output device was connected. Remove the check.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

drivers/gpu/drm/omapdrm/dss/dpi.c

@@ -701,7 +701,6 @@ static void dpi_disconnect(struct omap_dss_device *dssdev,
 
 	omapdss_output_unset_device(dssdev);
 
-	if (dssdev->manager)
 	dss_mgr_disconnect(dssdev->manager->id, dssdev);
 }
 

drivers/gpu/drm/omapdrm/dss/dsi.c

@@ -5019,7 +5019,6 @@ static void dsi_disconnect(struct omap_dss_device *dssdev,
 
 	omapdss_output_unset_device(dssdev);
 
-	if (dssdev->manager)
 	dss_mgr_disconnect(dssdev->manager->id, dssdev);
 }
 

drivers/gpu/drm/omapdrm/dss/hdmi4.c

@@ -474,7 +474,6 @@ static void hdmi_disconnect(struct omap_dss_device *dssdev,
 
 	omapdss_output_unset_device(dssdev);
 
-	if (dssdev->manager)
 	dss_mgr_disconnect(dssdev->manager->id, dssdev);
 }
 

drivers/gpu/drm/omapdrm/dss/hdmi5.c

@@ -500,7 +500,6 @@ static void hdmi_disconnect(struct omap_dss_device *dssdev,
 
 	omapdss_output_unset_device(dssdev);
 
-	if (dssdev->manager)
 	dss_mgr_disconnect(dssdev->manager->id, dssdev);
 }
 

drivers/gpu/drm/omapdrm/dss/sdi.c

@@ -316,7 +316,6 @@ static void sdi_disconnect(struct omap_dss_device *dssdev,
 
 	omapdss_output_unset_device(dssdev);
 
-	if (dssdev->manager)
 	dss_mgr_disconnect(dssdev->manager->id, dssdev);
 }
 

drivers/gpu/drm/omapdrm/dss/venc.c

@@ -778,7 +778,6 @@ static void venc_disconnect(struct omap_dss_device *dssdev,
 
 	omapdss_output_unset_device(dssdev);
 
-	if (dssdev->manager)
 	dss_mgr_disconnect(dssdev->manager->id, dssdev);
 }