tweaks: delete two functions that are never executed

Those two operations are performed directly in do_browser().

src/browser.c

@@ -749,18 +749,6 @@ void do_fileresearch(bool forwards)
 		findfile(last_search, forwards);
 }
 
-/* Select the first file in the list. */
-void to_first_file(void)
-{
-	selected = 0;
-}
-
-/* Select the last file in the list. */
-void to_last_file(void)
-{
-	selected = filelist_len - 1;
-}
-
 /* Strip one element from the end of path, and return the stripped path.
  * The returned string is dynamically allocated, and should be freed. */
 char *strip_last_component(const char *path)

src/global.c

@@ -298,6 +298,12 @@ void flip_goto(void)
 void to_files(void)
 {
 }
+void to_first_file(void)
+{
+}
+void to_last_file(void)
+{
+}
 void goto_dir(void)
 {
 }

src/prototypes.h

@@ -194,8 +194,6 @@ void browser_refresh(void);
 void browser_select_dirname(const char *needle);
 void do_filesearch(bool forwards);
 void do_fileresearch(bool forwards);
-void to_first_file(void);
-void to_last_file(void);
 char *strip_last_component(const char *path);
 #endif
 
@@ -654,6 +652,8 @@ void flip_replace(void);
 void flip_goto(void);
 #ifdef ENABLE_BROWSER
 void to_files(void);
+void to_first_file(void);
+void to_last_file(void);
 void goto_dir(void);
 #endif
 #ifndef NANO_TINY