Remove myself from authors

Apparently contributors are not listed there

Author: matemaciek

adafruit_display_shapes/polygon.py

@@ -9,7 +9,7 @@
 Various common shapes for use with displayio - Polygon shape!
 
 
-* Author(s): Melissa LeBlanc-Williams, Maciej Sokołowski
+* Author(s): Melissa LeBlanc-Williams
 
 Implementation Notes
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