ci: Remove unnecessary env variable from docs workflows

.github/workflows/docs-preview.yml

@@ -1,8 +1,5 @@
 name: Docs Preview
 
-env:
-  CARGO_TERM_COLOR: always
-
 on:
   workflow_run:
     workflows: [CI]
@@ -34,7 +31,7 @@ jobs:
             });
             let fs = require('fs');
             fs.writeFileSync(`${process.env.GITHUB_WORKSPACE}/docs.zip`, Buffer.from(download.data));
-      
+
       - name: Unzip artifact
         run: |
           unzip docs.zip

.github/workflows/docs-remove-preview.yml

@@ -1,8 +1,5 @@
 name: Docs Remove Preview
 
-env:
-  CARGO_TERM_COLOR: always
-
 on:
   workflow_run:
     workflows: [PR Closed]
@@ -34,7 +31,7 @@ jobs:
             } else {
               core.setFailed("Could not find PR");
             }
-      
+
       - name: Teardown preview
         if: steps.get_pr.outcome == 'success'
         continue-on-error: true