skins: No longer accept uppercase '[Lines]' section

We are breaking skin compatibility anyway, so there's no point carrying it.

Signed-off-by: Egmont Koblinger <egmont@gmail.com>

Author: egmontkob

lib/skin/lines.c

@@ -92,11 +92,6 @@ skin_get_char (mc_skin_t *mc_skin, const char *name, gunichar def, mc_tty_char_t
     char *value_utf8;
 
     value_utf8 = mc_config_get_string_raw (mc_skin->config, "lines", name, NULL);
-    if (value_utf8 == NULL)
-    {
-        // it was called "Lines" (uppercase L) in mc <= 4.8.33, accept that for compatibility
-        value_utf8 = mc_config_get_string_raw (mc_skin->config, "Lines", name, NULL);
-    }
     if (value_utf8 != NULL)
     {
         c = g_utf8_get_char_validated (value_utf8, -1);