ci: remove unused secrets from dryrun steps

.drone.jsonnet

@@ -49,8 +49,6 @@ 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

@@ -42,13 +42,9 @@ steps:
     settings:
       dockerfile: Dockerfile.amd64
       dry_run: true
-      password:
-        from_secret: docker_password
       platforms:
         - linux/amd64
       repo: thegeeklab/${DRONE_REPO_NAME}
-      username:
-        from_secret: docker_username
     when:
       ref:
         - refs/pull/**
@@ -123,13 +119,9 @@ steps:
     settings:
       dockerfile: Dockerfile.arm64
       dry_run: true
-      password:
-        from_secret: docker_password
       platforms:
         - linux/arm64/v8
       repo: thegeeklab/${DRONE_REPO_NAME}
-      username:
-        from_secret: docker_username
     when:
       ref:
         - refs/pull/**
@@ -204,13 +196,9 @@ 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/**
@@ -355,6 +343,6 @@ depends_on:
 
 ---
 kind: signature
-hmac: 58440189df0244438fb5e8111ede27f4fcf9f22b0d9d101fdeb5b4fc376f51fe
+hmac: 9c09d6d4eaa2214ad7c36464ae602be8107ae7019c83f61d2ae5d01549d57230
 
 ...