gh: remove useless workflow

Signed-off-by: Alessandro Comodi <acomodi@antmicro.com>

.github/workflows/ci.yml

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2daa4ea..c75e1bf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,13 +6,10 @@
 #
 # SPDX-License-Identifier: ISC
 
-name: CI
-
 on: [push, pull_request]
 
 jobs:
 
-
   Checks:
     runs-on: ubuntu-latest
     steps:
@@ -20,7 +17,12 @@
       with:
         submodules: recursive
 
-    - uses: symbiflow/actions/checks@main
+    - uses: SymbiFlow/actions/checks@main
+      with:
+        exclude_directory: |
+          - tests
+          - .git
+          - third_party
 
 
   Tests:

.github/workflows/licensing.yml

diff --git a/.github/workflows/licensing.yml b/.github/workflows/licensing.yml
deleted file mode 100644
index bfe8a3d..0000000
--- a/.github/workflows/licensing.yml
+++ /dev/null
@@ -1,27 +0,0 @@
-# Copyright (C) 2017-2021  The SymbiFlow Authors.
-#
-# Use of this source code is governed by a ISC-style
-# license that can be found in the LICENSE file or at
-# https://opensource.org/licenses/ISC
-#
-# SPDX-License-Identifier: ISC
-
-
-name: Licensing
-
-
-on:
-  push:
-  pull_request:
-
-
-jobs:
-  Checks:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
-
-    - uses: SymbiFlow/actions/checks@main
-      with:
-        exclude_directory: |
-          - tests