Update cheatsheets

go-clean

@@ -0,0 +1,25 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# go clean
+
+> Remove object files and cached files.
+> More information: <https://golang.org/cmd/go/#hdr-Remove_object_files_and_cached_files>.
+
+- Print the remove commands instead of actually removing anything:
+
+`go clean -n`
+
+- Delete the build cache:
+
+`go clean -cache`
+
+- Delete all cached test results:
+
+`go clean -testcache`
+
+- Delete the module cache:
+
+`go clean -modcache`