Remove redundant return variable

doc/py_tutorials/py_calib3d/py_pose/py_pose.markdown

@@ -70,7 +70,7 @@ for fname in glob.glob('left*.jpg'):
         corners2 = cv.cornerSubPix(gray,corners,(11,11),(-1,-1),criteria)
 
         # Find the rotation and translation vectors.
-        ret,rvecs, tvecs, inliers = cv.solvePnP(objp, corners2, mtx, dist)
+        ret,rvecs, tvecs = cv.solvePnP(objp, corners2, mtx, dist)
 
         # project 3D points to image plane
         imgpts, jac = cv.projectPoints(axis, rvecs, tvecs, mtx, dist)