staging: unisys: include: Remove unused enum

int visorbus_enable_channel_interrupts(struct visor_device *dev);

void visorbus_disable_channel_interrupts(struct visor_device *dev);

/*

 * Levels of severity for diagnostic events, in order from lowest severity to

 * highest (i.e. fatal errors are the most severe, and should always be logged,

 * but info events rarely need to be logged except during debugging). The

 * values DIAG_SEVERITY_ENUM_BEGIN and DIAG_SEVERITY_ENUM_END are not valid

 * severity values.  They exist merely to dilineate the list, so that future

 * additions won't require changes to the driver (i.e. when checking for

 * out-of-range severities in SetSeverity). The values DIAG_SEVERITY_OVERRIDE

 * and DIAG_SEVERITY_SHUTOFF are not valid severity values for logging events

 * but they are valid for controlling the amount of event data. Changes made

 * to the enum, need to be reflected in s-Par.

 */

enum diag_severity {

	DIAG_SEVERITY_VERBOSE = 0,

	DIAG_SEVERITY_INFO = 1,

	DIAG_SEVERITY_WARNING = 2,

	DIAG_SEVERITY_ERR = 3,

	DIAG_SEVERITY_PRINT = 4,

};

int visorchannel_signalremove(struct visorchannel *channel, u32 queue,

			      void *msg);

int visorchannel_signalinsert(struct visorchannel *channel, u32 queue,