code cleanup: remove unnecessary voice option translator

Option "language <name>"already causes SelectTranslator(<name>) to be
called. Having two options to do almost the same thing is unnecessary
and confusing.

In the long term, all options from SelectTranslator() should have a
switch case in LoadVoice() so they are user configurable (see #218). If
needed, a new option (maybe called "LoadOptions") could be added to load
an existing voice or language file.

Changes language configuration files for: hak, cmn, yue, ltg, ms, mb-ma1.
No changes to users.

espeak-ng-data/lang/bat/ltg

 language ltg
 maintainer Valdis Vitolins <valdis.vitolins@odo.lv>
 status testing
-translator lv // Reuse pronunciation rules from Latvian
 phonemes lv
 dictionary lv
 dictrules 2   // Setting for Latgalian pronunciation

espeak-ng-data/lang/poz/ms

 language ms
 phonemes id
 
-translator id
-
 stressLength 160 200  180 180  0 0  220 240
 stressAmp    16  18   18  18   0 0  22  21
 intonation	3	// Less intonation, and comma does not raise the pitch.

espeak-ng-data/lang/sit/cmn

 language zh-cmn
 language zh
 
-translator zh
 phonemes zh
 dictionary zh
 words 1

espeak-ng-data/lang/sit/hak

 language hak
 maintainer Chen Chien-ting <yoxem.tem98@nctu.edu.tw>
 status testing
-translator hak
 phonemes hak
 dictionary hak

espeak-ng-data/lang/sit/yue

 language zh-yue
 language zh 8
 
-translator zhy
 phonemes zhy
 dictionary zhy
 

espeak-ng-data/voices/mb/mb-ma1

 gender female
 pitch 140 260
 phonemes id
-translator id
 mbrola ma1 ma1_phtrans
 

src/libespeak-ng/tr_languages.c

 	}
 		break;
 	case L('l', 'v'): // latvian
+	case L3('l', 't', 'g'): // latgalian
 	{
 		static const unsigned char stress_amps_lv[8] = { 14, 10, 10, 8, 0, 0, 20, 15 };
 		static const short stress_lengths_lv[8] = { 180, 180, 180, 160, 0, 0, 230, 180 };

src/libespeak-ng/voices.c

 	V_NAME = 1,
 	V_LANGUAGE,
 	V_GENDER,
-	V_TRANSLATOR,
 	V_PHONEMES,
 	V_DICTIONARY,
 	V_VARIANTS,
 	{ "formant",      V_FORMANT },
 	{ "pitch",        V_PITCH },
 	{ "phonemes",     V_PHONEMES },
-	{ "translator",   V_TRANSLATOR },
 	{ "dictionary",   V_DICTIONARY },
 	{ "stressLength", V_STRESSLENGTH },
 	{ "stressAmp",    V_STRESSAMP },
 			current_voice_selected.age = age;
 		}
 			break;
-		case V_TRANSLATOR:
-			if (tone_only) break;
-
-			sscanf(p, "%s", translator_name);
-
-			if (new_translator != NULL)
-				DeleteTranslator(new_translator);
-
-			new_translator = SelectTranslator(translator_name);
-			langopts = &new_translator->langopts;
-			break;
 		case V_DICTIONARY: // dictionary
 			sscanf(p, "%s", new_dictionary);
 			break;