Remove the unicode_is_zerowidth() function, it was moved to unicode.c already

src/encode/utf8.c

@@ -139,34 +139,6 @@ char* utf8_normalize_str(char* str)
 	return str;
 }
 
-bool unicode_is_zerowidth(uint32_t u)
-{
-	switch(u) {
-		case 0x200B: // ZERO WIDTH SPACE
-		case 0x200C: // ZERO WIDTH NON-JOINER
-		case 0x200D: // ZERO WIDTH JOINER
-		case 0xFE00: // VARIATION SELECTOR-1
-		case 0xFE01: // VARIATION SELECTOR-2
-		case 0xFE02: // VARIATION SELECTOR-3
-		case 0xFE03: // VARIATION SELECTOR-4
-		case 0xFE04: // VARIATION SELECTOR-5
-		case 0xFE05: // VARIATION SELECTOR-6
-		case 0xFE06: // VARIATION SELECTOR-7
-		case 0xFE07: // VARIATION SELECTOR-8
-		case 0xFE08: // VARIATION SELECTOR-9
-		case 0xFE09: // VARIATION SELECTOR-10
-		case 0xFE0A: // VARIATION SELECTOR-11
-		case 0xFE0B: // VARIATION SELECTOR-12
-		case 0xFE0C: // VARIATION SELECTOR-13
-		case 0xFE0D: // VARIATION SELECTOR-14
-		case 0xFE0E: // VARIATION SELECTOR-15
-		case 0xFE0F: // VARIATION SELECTOR-16
-		case 0xFEFF: // ZERO WIDTH NO-BREAK SPACE
-			return true;
-	}
-	return false;
-}
-
 /* Replace all multi-byte UTF-8 sequences with 'ch' or 'zwch' (when non-zero) */
 /* When ch and zwch are 0, effectively strips all UTF-8 chars from str */
 char* utf8_replace_chars(char* str, char (*lookup)(uint32_t), char unsupported_ch, char unsupported_zwch, char error_ch)