Revert "ADDED .fossa file for fossa scans"

This reverts commit 6e1fd0eab6.

.fossa.yml

@@ -1,14 +0,0 @@
-# Generated by FOSSA CLI (https://github.com/fossas/fossa-cli)
-# Visit https://fossa.com to learn more
-
-version: 2
-cli:
-  server: https://app.fossa.io
-  fetcher: custom
-  project: git@github.com:docker/buildx
-analyze:
-  modules:
-  - name: github.com/docker/buildx/cmd/buildx
-    type: go
-    target: github.com/docker/buildx/cmd/buildx
-    path: cmd/buildx