tooldata/data/config.v1.xml: remove playground test
tooldata/data/config.v1.xml: remove playground test

We decided to stop maintaining the playground codebase, and are
disabling the playground test.

Change-Id: Ifc016bce89e1946c70b4b4676d23bfc7f3bd7ec6

vanadium/go.devtools,vanadium/go.devtools,vanadium/go.devtools