docs: remove go report card references

Signed-off-by: Christian Stewart <christian@aperture.us>

Author: paralin

README.md

@@ -1,13 +1,11 @@
 # common
 
-[![GoDoc Widget]][GoDoc] [![Go Report Card Widget]][Go Report Card] [![npm Widget]][npm]
+[![GoDoc Widget]][GoDoc] [![npm Widget]][npm]
 
 > Unified protobuf code generation for Go, TypeScript, C++, and Rust with WASM.
 
 [GoDoc]: https://godoc.org/github.com/aperturerobotics/common
 [GoDoc Widget]: https://godoc.org/github.com/aperturerobotics/common?status.svg
-[Go Report Card Widget]: https://goreportcard.com/badge/github.com/aperturerobotics/common
-[Go Report Card]: https://goreportcard.com/report/github.com/aperturerobotics/common
 [npm]: https://www.npmjs.com/package/@aptre/common
 [npm Widget]: https://img.shields.io/npm/v/@aptre/common.svg