Merged in Symonty/flatcam/Symonty-Symonty/removed-duplicate-simplejson-on-line-5-a-1561437627962 (pull request #158)

Removed duplicate simplejson on line 5 already on line 13

Approved-by: Symonty Symonty <symonty@symonty.org>

requirements.txt

@@ -2,7 +2,6 @@
 # Python pacakges that cannot be installed with pip (e.g. PyQt5, GDAL) are not included.
 # Usage: pip install -r requirements.txt
 numpy>=1.8
-simplejson
 dill
 rtree
 pyopengl