tweaks: delete some unneeded code, and rename the function accordingly

When set_colorpairs() is called, no files have been loaded yet, so
no syntaxes will have been loaded yet either.  Thus it is pointless
to run through the list of available syntaxes.

src/color.c

@@ -61,9 +61,8 @@ void set_syntax_colorpairs(syntaxtype *sntx)
 	}
 }
 
-/* Initialize the colors for nano's interface, and assign pair numbers
- * for the colors in each loaded syntax. */
-void set_colorpairs(void)
+/* Initialize the color pairs for nano's interface. */
+void set_interface_colorpairs(void)
 {
 	bool using_defaults = FALSE;
 
@@ -102,11 +101,6 @@ void set_colorpairs(void)
 
 		free(color_combo[index]);
 	}
-
-	/* For each loaded syntax, assign pair numbers to color combinations. */
-	for (syntaxtype *sntx = syntaxes; sntx != NULL; sntx = sntx->next)
-		if (sntx->filename == NULL)
-			set_syntax_colorpairs(sntx);
 }
 
 /* Initialize the color pairs for the current syntax. */

src/nano.c

@@ -2254,7 +2254,7 @@ int main(int argc, char **argv)
 	started_curses = TRUE;
 
 #ifdef ENABLE_COLOR
-	set_colorpairs();
+	set_interface_colorpairs();
 #else
 	interface_color_pair[TITLE_BAR] = hilite_attribute;
 	interface_color_pair[LINE_NUMBER] = hilite_attribute;

src/proto.h

@@ -242,7 +242,7 @@ bool is_valid_unicode(wchar_t wc);
 
 /* Most functions in color.c. */
 #ifdef ENABLE_COLOR
-void set_colorpairs(void);
+void set_interface_colorpairs(void);
 void prepare_palette(void);
 void find_and_prime_applicable_syntax(void);
 void set_up_multicache(linestruct *line);