Remove LOPT_IT_DOUBLING and delete unused functionality.

Code checked for both langopt LOPT_IT_DOUBLING and attribe $double.
LOPT_IT_DOUBLING is redundant. $double already has a test in
dictionary.test

Code had a check for tr->langopts.param[LOPT_IT_DOUBLING] & 2 but that bit value is
not used in any language. That logic was removed.

src/libespeak-ng/tr_languages.c

 		// fallthrough:
 	case L('f', 'i'): // Finnish
 	{
-		tr->langopts.param[LOPT_IT_DOUBLING] = 1;
 		tr->langopts.long_stop = 130;
 
 		tr->langopts.numbers = NUM_DECIMAL_COMMA | NUM_ALLOW_SPACE | NUM_DFRACTION_2 | NUM_ORDINAL_DOT;
 		tr->langopts.stress_rule = STRESSPOSN_1L;
 		tr->langopts.stress_flags = S_FINAL_DIM_ONLY | S_FINAL_NO_2 | S_NO_AUTO_2 | 0x8000 | S_HYPEN_UNSTRESS;
 		tr->langopts.unstressed_wd1 = 2;
-		tr->langopts.param[LOPT_IT_DOUBLING] = 1;
 		tr->langopts.param[LOPT_ANNOUNCE_PUNCT] = 2; // don't break clause before announcing . ? !
 
 		tr->langopts.numbers = NUM_DFRACTION_5 | NUM_ALLOW_SPACE | NUM_ROMAN | NUM_ROMAN_ORDINAL | NUM_ROMAN_CAPITALS | NUM_ORDINAL_DOT | NUM_OMIT_1_HUNDRED | NUM_OMIT_1_THOUSAND;
 		tr->langopts.unstressed_wd1 = 0;
 		tr->langopts.unstressed_wd2 = 2;
 		tr->langopts.param[LOPT_IT_LENGTHEN] = 2; // remove lengthen indicator from unstressed or non-penultimate syllables
-		tr->langopts.param[LOPT_IT_DOUBLING] = 1; // double the first consonant if the previous word ends in a stressed vowel (changed to =1, 23.01.2014 - only use if prev.word has $double)
 		tr->langopts.param[LOPT_SONORANT_MIN] = 130; // limit the shortening of sonorants before short vowels
 		tr->langopts.param[LOPT_REDUCE] = 1; // reduce vowels even if phonemes are specified in it_list
 		tr->langopts.param[LOPT_ALT] = 2; // call ApplySpecialAttributes2() if a word has $alt or $alt2
 
 		tr->langopts.stress_rule = STRESSPOSN_1L;
 		tr->langopts.stress_flags = S_FINAL_DIM_ONLY | S_FINAL_NO_2 | S_2_TO_HEAVY; // move secondary stress from light to a following heavy syllable
-		tr->langopts.param[LOPT_IT_DOUBLING] = 1;
 		tr->langopts.long_stop = 130;
 
 		tr->langopts.numbers = NUM_DECIMAL_COMMA | NUM_ALLOW_SPACE | NUM_SWAP_TENS | NUM_OMIT_1_HUNDRED | NUM_DFRACTION_2 | NUM_ORDINAL_DOT;

src/libespeak-ng/translate.c

 			srcix = source_ix+1;
 		} else if (ph_code == phonX1) {
 			// a language specific action
-			if (tr->langopts.param[LOPT_IT_DOUBLING])
 				flags |= FLAG_DOUBLING;
 		} else {
 			ph_list2[n_ph_list2].phcode = ph_code;
 					next_tone = 0;
 				}
 			} else {
-				if (first_phoneme && tr->langopts.param[LOPT_IT_DOUBLING]) {
-					if (((tr->prev_dict_flags[0] & FLAG_DOUBLING) && (tr->langopts.param[LOPT_IT_DOUBLING] & 1)) ||
-					    (tr->end_stressed_vowel && (tr->langopts.param[LOPT_IT_DOUBLING] & 2))) {
-						// italian, double the initial consonant if the previous word ends with a
-						// stressed vowel, or is marked with a flag
-						ph_list2[n_ph_list2].synthflags |= SFLAG_LENGTHEN;
-					}
+				if (first_phoneme && tr->prev_dict_flags[0] & FLAG_DOUBLING) {
+						// double the initial consonant if the previous word is marked with a flag
+					ph_list2[n_ph_list2].synthflags |= SFLAG_LENGTHEN;
 				}
 			}
 

src/libespeak-ng/translate.h

 // 1 = stressed syllable is indicated by capitals
 #define LOPT_CAPS_IN_WORD 13
 
-// bit 0=Italian "syntactic doubling" of consoants in the word after a word marked with $double attribute
-// bit 1=also after a word which ends with a stressed vowel
-#define LOPT_IT_DOUBLING 14
-
 // Call ApplySpecialAttributes() if $alt or $alt2 is set for a word
 // bit 1: stressed syllable: $alt change [e],[o] to [E],[O],  $alt2 change [E],[O] to [e],[o]
 #define LOPT_ALT 15