ci: remove unused secrets from dryrun steps

.drone.jsonnet

@@ -48,8 +48,6 @@ local PipelineBuildContainer(arch='amd64') = {
           'linux/' + std.strReplace(arch, '_', '/'),
         ],
         repo: 'thegeeklab/${DRONE_REPO_NAME}',
-        username: { from_secret: 'docker_username' },
-        password: { from_secret: 'docker_password' },
       },
       depends_on: ['tags'],
       when: {

.drone.yml

@@ -41,13 +41,9 @@ steps:
     settings:
       dockerfile: Dockerfile.amd64
       dry_run: true
-      password:
-        from_secret: docker_password
       platforms:
         - linux/amd64
       repo: thegeeklab/${DRONE_REPO_NAME}
-      username:
-        from_secret: docker_username
     when:
       ref:
         - refs/pull/**
@@ -119,13 +115,9 @@ steps:
     settings:
       dockerfile: Dockerfile.arm64
       dry_run: true
-      password:
-        from_secret: docker_password
       platforms:
         - linux/arm64/v8
       repo: thegeeklab/${DRONE_REPO_NAME}
-      username:
-        from_secret: docker_username
     when:
       ref:
         - refs/pull/**
@@ -197,13 +189,9 @@ steps:
     settings:
       dockerfile: Dockerfile.arm
       dry_run: true
-      password:
-        from_secret: docker_password
       platforms:
         - linux/arm/v7
       repo: thegeeklab/${DRONE_REPO_NAME}
-      username:
-        from_secret: docker_username
     when:
       ref:
         - refs/pull/**
@@ -346,6 +334,6 @@ depends_on:
 
 ---
 kind: signature
-hmac: e01c71685cd5c8bc235273a450d476800abcc897ffb4855841d30b86ff7b290c
+hmac: 520ad7bace767f38980a5e1c8a47c547dbd49a5e2f4260dfa0616c7f9d6964ee
 
 ...