fix: clone public repo without auth

.drone.yml

@@ -13,22 +13,14 @@ steps:
   - name: dev-clone
     image: ccr.ccs.tencentyun.com/violin/git-alpine:latest
     commands:
-      - git clone https://${git_username}:${git_password}@gitea.violin-work.online/sales/todo-backend.git /drone/src
+      - git clone https://gitea.violin-work.online/sales/todo-backend.git /drone/src
       - cd /drone/src
       - git checkout dev
-    environment:
-      git_username:
-        from_secret: git_username
-      git_password:
-        from_secret: git_password
 
   - name: dev-build
     image: ccr.ccs.tencentyun.com/violin/maven:3.9-eclipse-temurin-22
     commands:
       - mvn clean package -DskipTests
-    when:
-      status:
-        - success
 
   - name: dev-build-image
     image: ccr.ccs.tencentyun.com/violin/docker:linux-amd64
@@ -67,14 +59,9 @@ steps:
   - name: prod-clone
     image: ccr.ccs.tencentyun.com/violin/git-alpine:latest
     commands:
-      - git clone https://${git_username}:${git_password}@gitea.violin-work.online/sales/todo-backend.git /drone/src
+      - git clone https://gitea.violin-work.online/sales/todo-backend.git /drone/src
       - cd /drone/src
       - git checkout master
-    environment:
-      git_username:
-        from_secret: git_username
-      git_password:
-        from_secret: git_password
 
   - name: prod-build
     image: ccr.ccs.tencentyun.com/violin/maven:3.9-eclipse-temurin-22