Remove some garbage unrelated symbols

I mean, let's be honest, most of these symbols are garbage candidates.
But these ones I accidentally left from trying to get ChatGPT to find
emoji for me.
More helpful were https://emojidb.org/ and http://shapecatcher.com/

README.md

@@ -46,7 +46,7 @@ python paint.py
 - Line: 📏📉📈⟍𝈏⧹
 - Curve: ↪️🪝🌙〰️◡◠~∼≈∽∿〜〰﹋﹏≈≋～
 - Rectangle: ▭▬▮▯◼️◻️⬜⬛🟧🟩
-- Polygon: ▙𝗟𝙇⬣⬟△▲🔺🔻🔳🔲🔷🔶🔴🔵🟠🟡
+- Polygon: ▙𝗟𝙇⬣⬟△▲🔺🔻🔷🔶
 - Ellipse: ⬭🔴🔵🔶🔷🔸🔹🟠🟡🟢🟣🫧
 - Rounded Rectangle: ▢⬜⬛
 

paint.py

@@ -48,7 +48,7 @@ class Tool(Enum):
         # - Line: 📏📉📈⟍𝈏⧹
         # - Curve: ↪️🪝🌙〰️◡◠~∼≈∽∿〜〰﹋﹏≈≋～
         # - Rectangle: ▭▬▮▯◼️◻️⬜⬛🟧🟩
-        # - Polygon: ▙𝗟𝙇⬣⬟△▲🔺🔻🔳🔲🔷🔶🔴🔵🟠🟡
+        # - Polygon: ▙𝗟𝙇⬣⬟△▲🔺🔻🔷🔶
         # - Ellipse: ⬭🔴🔵🔶🔷🔸🔹🟠🟡🟢🟣🫧
         # - Rounded Rectangle: ▢⬜⬛