Removed opencv

bob/bio/face/annotator/bobiptinyface.py

 import bob.ip.facedetect.tinyface
 from . import Base
-import cv2 as cv
 
 
 class BobIpTinyface(Base):
@@ -29,4 +28,4 @@ class BobIpTinyface(Base):
         if annotations is not None:
             return annotations[0]
         else:
-            return None
\ No newline at end of file
+            return None