tty: vt: remove extern from functions in selection.h

Remove unneeded 'extern' keyword from function prototypes in
selection.h. This makes it more readable as no more wrapping is needed
on many places.
Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Tested-by: Helge Deller <deller@gmx.de> # parisc STI console
Link: https://lore.kernel.org/r/20240122110401.7289-19-jirislaby@kernel.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

include/linux/selection.h

@@ -14,15 +14,14 @@
 struct tty_struct;
 struct vc_data;
 
-extern void clear_selection(void);
-extern int set_selection_user(const struct tiocl_selection __user *sel,
+void clear_selection(void);
+int set_selection_user(const struct tiocl_selection __user *sel,
 		       struct tty_struct *tty);
-extern int set_selection_kernel(struct tiocl_selection *v,
-				struct tty_struct *tty);
-extern int paste_selection(struct tty_struct *tty);
-extern int sel_loadlut(u32 __user *lut);
-extern int mouse_reporting(void);
-extern void mouse_report(struct tty_struct * tty, int butt, int mrx, int mry);
+int set_selection_kernel(struct tiocl_selection *v, struct tty_struct *tty);
+int paste_selection(struct tty_struct *tty);
+int sel_loadlut(u32 __user *lut);
+int mouse_reporting(void);
+void mouse_report(struct tty_struct *tty, int butt, int mrx, int mry);
 
 bool vc_is_sel(const struct vc_data *vc);
 
@@ -33,24 +32,21 @@ extern unsigned char default_red[];
 extern unsigned char default_grn[];
 extern unsigned char default_blu[];
 
-extern unsigned short *screen_pos(const struct vc_data *vc, int w_offset,
-		bool viewed);
-extern u16 screen_glyph(const struct vc_data *vc, int offset);
-extern u32 screen_glyph_unicode(const struct vc_data *vc, int offset);
-extern void complement_pos(struct vc_data *vc, int offset);
-extern void invert_screen(struct vc_data *vc, int offset, int count, bool viewed);
-
-extern void getconsxy(const struct vc_data *vc, unsigned char xy[static 2]);
-extern void putconsxy(struct vc_data *vc, unsigned char xy[static const 2]);
-
-extern u16 vcs_scr_readw(const struct vc_data *vc, const u16 *org);
-extern void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org);
-extern void vcs_scr_updated(struct vc_data *vc);
-
-extern int vc_uniscr_check(struct vc_data *vc);
-extern void vc_uniscr_copy_line(const struct vc_data *vc, void *dest,
-				bool viewed,
-				unsigned int row, unsigned int col,
-				unsigned int nr);
+unsigned short *screen_pos(const struct vc_data *vc, int w_offset, bool viewed);
+u16 screen_glyph(const struct vc_data *vc, int offset);
+u32 screen_glyph_unicode(const struct vc_data *vc, int offset);
+void complement_pos(struct vc_data *vc, int offset);
+void invert_screen(struct vc_data *vc, int offset, int count, bool viewed);
+
+void getconsxy(const struct vc_data *vc, unsigned char xy[static 2]);
+void putconsxy(struct vc_data *vc, unsigned char xy[static const 2]);
+
+u16 vcs_scr_readw(const struct vc_data *vc, const u16 *org);
+void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org);
+void vcs_scr_updated(struct vc_data *vc);
+
+int vc_uniscr_check(struct vc_data *vc);
+void vc_uniscr_copy_line(const struct vc_data *vc, void *dest, bool viewed,
+			 unsigned int row, unsigned int col, unsigned int nr);
 
 #endif