Clean up tests and imports

Signed-off-by: Eric Peterson <ericpeterson@spotify.com>

packages/techdocs-common/__mocks__/@google-cloud/storage.ts

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { Readable, Writable } from 'stream';
+import { Readable } from 'stream';
 import fs from 'fs-extra';
 import os from 'os';
 import path from 'path';

packages/techdocs-common/src/stages/publish/awsS3.test.ts

@@ -296,6 +296,10 @@ describe('AwsS3Publish', () => {
       });
     });
 
+    afterEach(() => {
+      mockFs.restore();
+    });
+
     it('should pass expected object path to bucket', async () => {
       const {
         kind,

packages/techdocs-common/src/stages/publish/azureBlobStorage.test.ts

@@ -353,6 +353,10 @@ describe('publishing with valid credentials', () => {
       });
     });
 
+    afterEach(() => {
+      mockFs.restore();
+    });
+
     it('should pass expected object path to bucket', async () => {
       const {
         kind,

packages/techdocs-common/src/stages/publish/googleStorage.test.ts

@@ -295,6 +295,10 @@ describe('GoogleGCSPublish', () => {
       });
     });
 
+    afterEach(() => {
+      mockFs.restore();
+    });
+
     it('should pass expected object path to bucket', async () => {
       const {
         kind,

packages/techdocs-common/src/stages/publish/openStackSwift.test.ts

@@ -301,6 +301,10 @@ describe('OpenStackSwiftPublish', () => {
       });
     });
 
+    afterEach(() => {
+      mockFs.restore();
+    });
+
     it('should pass expected object path to bucket', async () => {
       const {
         kind,