fix link error for helix/rev3_5rows:five_rows (qmk#14466)

This is a tentative quick fix.
I was adding the same functions for both qmk#14426 and qmk#14427 and they were in conflict.

keyboards/helix/rev3_5rows/keymaps/five_rows/oled_display.c

@@ -25,6 +25,10 @@
 #include <string.h>
 #include "layer_number.h"
 
+char *sprints(char *buf, char *src);
+char *sprintd(char *buf, char *leadstr, int data);
+char *sprint2d(char *buf, char *leadstr, int data);
+
 extern int current_default_layer;
 
 void init_helix_oled(void) {
@@ -64,55 +68,6 @@ void matrix_update(struct CharacterMatrix *dest,
 }
 #    endif
 
-static char *sprint_decimal(char *buf, int data) {
-    if (data > 9) {
-        buf = sprint_decimal(buf, data/10);
-    }
-    *buf++ = "0123456789"[data%10];
-    *buf = '\0';
-    return buf;
-}
-
-static char *sprint_hex(char *buf, uint32_t data) {
-    if (data > 0xf) {
-        buf = sprint_hex(buf, data/0x10);
-    }
-    *buf++ = "0123456789abcdef"[data & 0xf];
-    *buf = '\0';
-    return buf;
-}
-
-char *sprints(char *buf, char *src) {
-    while (*src) {
-        *buf++ = *src++;
-    }
-    *buf = '\0';
-    return buf;
-}
-
-char *sprintx(char *buf, char *leadstr, uint32_t data) {
-    buf = sprints(buf, leadstr);
-    buf = sprint_hex(buf, data);
-    return buf;
-}
-
-char *sprintd(char *buf, char *leadstr, int data) {
-    buf = sprints(buf, leadstr);
-    buf = sprint_decimal(buf, data);
-    return buf;
-}
-
-char *sprint2d(char *buf, char *leadstr, int data) {
-    buf = sprints(buf, leadstr);
-    if (data > 99) {
-        return sprint_decimal(buf, data);
-    }
-    if (data < 10) {
-        *buf++ = ' ';
-    }
-    return sprint_decimal(buf, data);
-}
-
 #    ifdef SSD1306OLED
 static void render_logo(struct CharacterMatrix *matrix) {
 #    else