Don't include file size in image metadata; it is, at best, distracting and it...

Don't include file size in image metadata; it is, at best, distracting and it is already in the directory metadata.

If the files have different sizes but are otherwise identical (ie. if the
image is being 'sneaky'), then this will be revealed in much better ways
by diffoscope already

diffoscope/comparators/image.py

@@ -47,7 +47,6 @@ class Img2Txt(Command):
 class Identify(Command):
     ATTRIBUTES = (
         "Image format: %m",
-        "File size: %b",
         "Height: %[height]",
         "Width: %[width]",
         "Orientation: %[orientation]",

tests/data/ico_image_meta_expected_diff

-@@ -1,17 +1,17 @@
- Image format: ICO
--File size: 6926B
-+File size: 3270B
+@@ -2,15 +2,15 @@
  Height: 100
  Width: 100
  Orientation: Undefined

tests/data/ico_image_meta_expected_diff_v2

-@@ -1,17 +1,17 @@
- Image format: ICO
--File size: 6926B
-+File size: 3270B
+@@ -2,15 +2,15 @@
  Height: 100
  Width: 100
  Orientation: Undefined

tests/data/jpeg_image_meta_expected_diff

-@@ -1,20 +1,20 @@
+@@ -1,19 +1,19 @@
  Image format: JPEG
--File size: 662B
-+File size: 627B
  Height: 100
  Width: 100
  Orientation: Undefined