drm: Remove unused devm_drm_irq_install()

DRM IRQ helpers will become legacy. The function devm_drm_irq_install()
is unused and won't be required later.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210803090704.32152-14-tzimmermann@suse.de

drivers/gpu/drm/drm_irq.c

@@ -209,38 +209,6 @@ int drm_irq_uninstall(struct drm_device *dev)
 }
 EXPORT_SYMBOL(drm_irq_uninstall);
 
-static void devm_drm_irq_uninstall(void *data)
-{
-	drm_irq_uninstall(data);
-}
-
-/**
- * devm_drm_irq_install - install IRQ handler
- * @dev: DRM device
- * @irq: IRQ number to install the handler for
- *
- * devm_drm_irq_install is a  help function of drm_irq_install.
- *
- * if the driver uses devm_drm_irq_install, there is no need
- * to call drm_irq_uninstall when the drm module get unloaded,
- * as this will done automagically.
- *
- * Returns:
- * Zero on success or a negative error code on failure.
- */
-int devm_drm_irq_install(struct drm_device *dev, int irq)
-{
-	int ret;
-
-	ret = drm_irq_install(dev, irq);
-	if (ret)
-		return ret;
-
-	return devm_add_action_or_reset(dev->dev,
-					devm_drm_irq_uninstall, dev);
-}
-EXPORT_SYMBOL(devm_drm_irq_install);
-
 #if IS_ENABLED(CONFIG_DRM_LEGACY)
 int drm_legacy_irq_control(struct drm_device *dev, void *data,
 			   struct drm_file *file_priv)

include/drm/drm_irq.h

@@ -28,5 +28,4 @@ struct drm_device;
 
 int drm_irq_install(struct drm_device *dev, int irq);
 int drm_irq_uninstall(struct drm_device *dev);
-int devm_drm_irq_install(struct drm_device *dev, int irq);
 #endif