cleanup: moved dictmin to LoadLanguageOptions()

Note: This feature has no tests. It doesn't look very useful and I think
could be removed.

src/libespeak-ng/langopts.c

         int n;
 
 		switch (key) {
+		case V_DICTMIN: {
+			if (CheckTranslator(translator, langopts_tab, key) != 0)
+				break;
+
+			if (sscanf(keyValue, "%d", &n) == 1)
+				translator->dict_min_size = n;
+
+			break;
+			}
+
 			case V_DICTRULES: { // conditional dictionary rules and list entries
 				if (CheckTranslator(translator, langopts_tab, key) != 0)
 					break;

src/libespeak-ng/voices.c

                 sscanf(p, "%d", &speed.fast_settings);
                 SetSpeed(3);
                 break;
-            case V_DICTMIN: {
-                if (CheckTranslator(translator, keyword_tab, key) != 0)
-                    break;
 
-                if (sscanf(p, "%d", &value) == 1)
-                    translator->dict_min_size = value;
-                break;
-                }
-
-                break;
             case V_MAINTAINER:
             case V_STATUS:
                 break;