global refactoring and fixes,

removed support of extracted(aligned) PNG faces. Use old builds to convert from PNG to JPG.

fanseg model file in facelib/ is renamed

DFLIMG/DFLIMG.py

@@ -1,15 +1,12 @@
 from pathlib import Path
 
 from .DFLJPG import DFLJPG
-from .DFLPNG import DFLPNG
 
 class DFLIMG():
 
     @staticmethod
     def load(filepath, loader_func=None):
-        if filepath.suffix == '.png':
-            return DFLPNG.load( str(filepath), loader_func=loader_func )
-        elif filepath.suffix == '.jpg':
+        if filepath.suffix == '.jpg':
             return DFLJPG.load ( str(filepath), loader_func=loader_func )
         else:
             return None