Revert "webui-vue: Add a task to find node licences"

This reverts commit 28d31537.

This commit no longer compiles with the latest upstream yocto rebase.
I've spent a few hours trying to fix it but no luck. Regenerating the
files did not help.

The error is the following:
npm verb stack Error: request to https://registry.npmjs.org/archy failed: cache mode is 'only-if-cached' but no cached response is available.

This appears to just be for licensing information so not something
required for the function to work. Revert until a fix can be identified.

Change-Id: I2863ffada3e8b0124fa0cf5194f4407488f08e15