video: fbdev: remove unused auo_k190xfb drivers

auo_k1900fb and auo_k1901fb drivers have been introduced six
years ago by following commits:

commit 2c8304d312 ("video: auo_k190x: add code shared by controller drivers")
commit 96b1d500e0 ("video: auo_k190x: add driver for AUO-K1900 variant")
commit 53027cdf2a ("video: auo_k190x: add driver for AUO-K1901 variant")

They never had any in-kernel user so just remove them (since
they are platform drivers they need corresponding platform
devices to be registered by kernel and it has never happened).

Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

include/video/auo_k190xfb.h

@@ -1,107 +0,0 @@
-/*
- * Definitions for AUO-K190X framebuffer drivers
- *
- * Copyright (C) 2012 Heiko Stuebner <heiko@sntech.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef _LINUX_VIDEO_AUO_K190XFB_H_
-#define _LINUX_VIDEO_AUO_K190XFB_H_
-
-/* Controller standby command needs a param */
-#define AUOK190X_QUIRK_STANDBYPARAM	(1 << 0)
-
-/* Controller standby is completely broken */
-#define AUOK190X_QUIRK_STANDBYBROKEN	(1 << 1)
-
-/*
- * Resolutions for the displays
- */
-#define AUOK190X_RESOLUTION_800_600		0
-#define AUOK190X_RESOLUTION_1024_768		1
-#define AUOK190X_RESOLUTION_600_800		4
-#define AUOK190X_RESOLUTION_768_1024		5
-
-/*
- * struct used by auok190x. board specific stuff comes from *board
- */
-struct auok190xfb_par {
-	struct fb_info *info;
-	struct auok190x_board *board;
-
-	struct regulator *regulator;
-
-	struct mutex io_lock;
-	struct delayed_work work;
-	wait_queue_head_t waitq;
-	int resolution;
-	int rotation;
-	int consecutive_threshold;
-	int update_cnt;
-
-	/* panel and controller informations */
-	int epd_type;
-	int panel_size_int;
-	int panel_size_float;
-	int panel_model;
-	int tcon_version;
-	int lut_version;
-
-	/* individual controller callbacks */
-	void (*update_partial)(struct auok190xfb_par *par, u16 y1, u16 y2);
-	void (*update_all)(struct auok190xfb_par *par);
-	bool (*need_refresh)(struct auok190xfb_par *par);
-	void (*init)(struct auok190xfb_par *par);
-	void (*recover)(struct auok190xfb_par *par);
-
-	int update_mode; /* mode to use for updates */
-	int last_mode; /* update mode last used */
-	int flash;
-
-	/* power management */
-	int autosuspend_delay;
-	bool standby;
-	bool manual_standby;
-};
-
-/**
- * Board specific platform-data
- * @init:		initialize the controller interface
- * @cleanup:		cleanup the controller interface
- * @wait_for_rdy:	wait until the controller is not busy anymore
- * @set_ctl:		change an interface control
- * @set_hdb:		write a value to the data register
- * @get_hdb:		read a value from the data register
- * @setup_irq:		method to setup the irq handling on the busy gpio
- * @gpio_nsleep:	sleep gpio
- * @gpio_nrst:		reset gpio
- * @gpio_nbusy:		busy gpio
- * @resolution:		one of the AUOK190X_RESOLUTION constants
- * @rotation:		rotation of the framebuffer
- * @quirks:		controller quirks to honor
- * @fps:		frames per second for defio
- */
-struct auok190x_board {
-	int (*init)(struct auok190xfb_par *);
-	void (*cleanup)(struct auok190xfb_par *);
-	int (*wait_for_rdy)(struct auok190xfb_par *);
-
-	void (*set_ctl)(struct auok190xfb_par *, unsigned char, u8);
-	void (*set_hdb)(struct auok190xfb_par *, u16);
-	u16 (*get_hdb)(struct auok190xfb_par *);
-
-	int (*setup_irq)(struct fb_info *);
-
-	int gpio_nsleep;
-	int gpio_nrst;
-	int gpio_nbusy;
-
-	int resolution;
-	int quirks;
-	int fps;
-};
-
-#endif