[FIX] Category Icon: remove some lines which causes warning message

[jerneju]

Issue

Each time Orange starts this message appears in a console:

couldn't create image from "EC2EE3FB7160215B.jpg"

Description of changes

Some lines removed in category.svg file.

Includes

• [X] Code changes
• [ ] Tests
• [ ] Documentation

[codecov-io]

Codecov Report

Merging #46 into master will decrease coverage by <.01%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #46      +/-   ##
==========================================
- Coverage   91.25%   91.24%   -0.01%     
==========================================
  Files          15       14       -1     
  Lines        1783     1782       -1     
  Branches      214      214              
==========================================
- Hits         1627     1626       -1     
  Misses        120      120              
  Partials       36       36

Impacted Files	Coverage Δ
...ontrib/educational/widgets/utils/tests/__init__.py

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 0cd1afd...30989e1. Read the comment docs.

[kernc]

👍