fix: 删除deployment外键，防止pipeline无法被正确删除

web/src/main/resources/sql/table_init.sql

@@ -81,8 +81,6 @@ create table if not exists devcloud.deployment
     access_url    text        null,
     constraint deployment_pipeline_id_uindex
         unique (pipeline_id),
-    constraint deployment_pipeline_id_fk
-        foreign key (pipeline_id) references devcloud.pipeline (id)
 ) CHARSET=utf8;
 
 create table if not exists devcloud.project_related