Remove problematic unicode_map stub definition in process_unicodemap.c (#5110)

* Remove problematic unicode_map stub definition in process_unicodemap.c

* Add unicode_map declaration to process_unicodemap.h

* Disable UNICODEMAP on converter boards that don't use it

2 files changed, 2 insertions, 3 deletions

diff --git a/quantum/process_keycode/process_unicodemap.c b/quantum/process_keycode/process_unicodemap.c
index cee9acb5f..327402761 100644
--- a/quantum/process_keycode/process_unicodemap.c
+++ b/quantum/process_keycode/process_unicodemap.c
@@ -17,9 +17,6 @@
 #include "process_unicodemap.h"
 #include "process_unicode_common.h"
 
-__attribute__((weak))
-const uint32_t PROGMEM unicode_map[] = {};
-
 void register_hex32(uint32_t hex) {
   bool onzerostart = true;
   for(int i = 7; i >= 0; i--) {
diff --git a/quantum/process_keycode/process_unicodemap.h b/quantum/process_keycode/process_unicodemap.h
index 5764697f8..fe4f97915 100644
--- a/quantum/process_keycode/process_unicodemap.h
+++ b/quantum/process_keycode/process_unicodemap.h
@@ -19,5 +19,7 @@
 #include "quantum.h"
 #include "process_unicode_common.h"
 
+extern const uint32_t PROGMEM unicode_map[];
+
 void unicodemap_input_error(void);
 bool process_unicodemap(uint16_t keycode, keyrecord_t *record);