Revert "Add PyMsql icon (#331)" (#332)

This reverts commit 7d95c7664674ca73d2e733f1b51f54d79f0d9ed3.
diff --git a/src/views/components/topology/assets/PYMYSQL.png b/src/views/components/topology/assets/PYMYSQL.png
deleted file mode 100755
index 8801526..0000000
--- a/src/views/components/topology/assets/PYMYSQL.png
+++ /dev/null
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