Definition cleanup

Removed a few ghost definitions
Adjusted some definitions to use the same types

Related to #1738

src/map/script.c

@@ -3095,7 +3095,7 @@ int set_reg(struct script_state* st, TBL_PC* sd, int64 num, const char* name, co
 	}
 }
 
-int set_var(TBL_PC* sd, char* name, void* val)
+int set_var(struct map_session_data* sd, char* name, void* val)
 {
 	return set_reg(NULL, sd, reference_uid(add_str(name),0), name, val, NULL);
 }