Remove the additional LoadVoice search heuristics.

These heuristics were designed to guess the location of the voice
files without searching the voice list. The heuristics are very
implementation dependent, and easily break when voices move around.
The voices are still found correctly, so these heuristics are
redundant.

src/libespeak-ng/voices.c

 	static char voice_name[40];       // voice name for current_voice_selected
 	static char voice_languages[100]; // list of languages and priorities for current_voice_selected
 
-	// which directory to look for a named voice. List of voice names, must end in a space.
-	static const char *voices_asia =
-	    "az bn fa fa-pin gu hi hy hy-west id ka kn ku ml ms ne pa ta te tr vi vi-hue vi-sgn zh zh-yue ";
-	static const char *voices_europe =
-	    "an bg bs ca cs cy da de el en en-us es et eu fi fr fr-be ga hr hu is it lt lv mk nl no pl pt-pt ro ru sk sq sr sv ";
-
 	strncpy0(voicename, vname, sizeof(voicename));
 	if (control & 0x10) {
 		strcpy(buf, vname);
 			strcpy(voicename, "default");
 
 		sprintf(path_voices, "%s%cvoices%c", path_home, PATHSEP, PATHSEP);
-		sprintf(buf, "%s%s", path_voices, voicename); // first, look in the main voices directory
-
-		if (GetFileLength(buf) <= 0) {
-			// then look in the appropriate subdirectory
-			if ((voicename[0] == 'm') && (voicename[1] == 'b'))
-				voice_dir = "mb"; // mbrola voices
-			else {
-				sprintf(name2, "%s ", voicename);
-				if (strstr(voices_europe, voicename) != NULL)
-					voice_dir = "europe";
-				else if (strstr(voices_asia, voicename) != NULL)
-					voice_dir = "asia";
-				else
-					voice_dir = "other";
-			}
-
-			sprintf(buf, "%s%s%c%s", path_voices, voice_dir, PATHSEP, voicename);
-
-			if (GetFileLength(buf) <= 0) {
-				// if not found, look in "test" sub-directory
-				sprintf(buf, "%stest%c%s", path_voices, PATHSEP, voicename);
-			}
-		}
+		sprintf(buf, "%s%s", path_voices, voicename); // look in the main voices directory
 	}
 
 	f_voice = fopen(buf, "r");