Remove from_path and from_array methods

Having these methods and the constructor arguments is a bit redundant.

skimage/novice/_novice.py

@@ -309,23 +309,6 @@ class Picture(object):
         self._modified = False
         self.scale = 1
 
-    @staticmethod
-    def from_path(path):
-        """Creates a Picture from an image file.
-
-        Parameters
-        ----------
-        path : str
-            Path to the image file.
-
-        Returns
-        -------
-        pic : Picture
-            A Picture with the image file data loaded.
-
-        """
-        return Picture(path=path)
-
     @staticmethod
     def from_size(size, color='black'):
         """Return a Picture of the specified size and a uniform color.
@@ -344,26 +327,6 @@ class Picture(object):
         array = np.ones(rgb_size, dtype=np.uint8) * color
         return Picture(array=array)
 
-    @staticmethod
-    def from_array(array):
-        """Creates a single color Picture.
-
-        Parameters
-        ----------
-        color : tuple
-            RGB tuple with the fill color for the picture [0-255]
-
-        size : tuple
-            Width and height of the picture in pixels.
-
-        Returns
-        -------
-        pic : Picture
-            A Picture with the given color and size.
-
-        """
-        return Picture(array=array)
-
     def save(self, path):
         """Saves the picture to the given path.