Do not depend on the Go extension

This may seem strange, but not depending on this version makes it easier
to fix issues after running `tinygo clean` when the Go extension fails
to startup. Just select a board again in TinyGo, restart VSCode, and
things work again.

TODO: the extension should also detect this situation and resolve it, so
that there's no need for manually selecting a different board.

package.json

@@ -9,7 +9,6 @@
 	"categories": [
 		"Programming Languages"
 	],
-	"extensionDependencies": ["golang.go"],
 	"repository": {
 		"type": "git",
 		"url": "https://github.com/tinygo-org/vscode-tinygo"