feat: drop v2 packages

Author: jannyHou

CODEOWNERS

@@ -15,9 +15,7 @@ packages/example-hello-world/* @b-admike
 packages/example-log-extension/* @virkt25
 packages/example-rpc-server/* @kjdelisle
 packages/metadata/* @raymondfeng
-packages/openapi-spec/* @bajtos @jannyHou
 packages/openapi-spec-builder/* @bajtos @raymondfeng
-packages/openapi-v2/* @bajtos @jannyHou
 packages/openapi-v3/* @bajtos @jannyHou
 packages/openapi-v3-types/* @bajtos @jannyHou
 packages/repository/* @raymondfeng @kjdelisle

MONOREPO.md

@@ -18,8 +18,6 @@ The [loopback-next](https://github.com/strongloop/loopback-next) repository uses
 |[example-rpc-server](packages/example-rpc-server)          | _(private)_                    | An example RPC server and application to demonstrate the creation of your own custom server |
 |[metadata](packages/metadata)                              |@loopback/metadata              | Utilities to help developers implement TypeScript decorators, define/merge metadata, and inspect metadata |
 |[openapi-spec-builder](packages/openapi-spec-builder)      |@loopback/openapi-spec-builder  | Builders to create OpenAPI (Swagger) specification documents in tests |
-|[openapi-spec](packages/openapi-spec)                      |@loopback/openapi-spec          | TypeScript type definitions for OpenAPI Spec/Swagger documents |
-|[openapi-v2](packages/openapi-v2)                          |@loopback/openapi-v2            | Decorators that annotate LoopBack artifacts with OpenAPI v2 (Swagger) metadata and utilities that transform LoopBack metadata to OpenAPI v2 (Swagger) specifications|
 |[openapi-v3](packages/openapi-v3)                          |@loopback/openapi-v3            | Decorators that annotate LoopBack artifacts with OpenAPI v3 metadata and utilities that transform LoopBack metadata to OpenAPI v3 specifications|
 |[openapi-v3-types](packages/openapi-v3-types)              |@loopback/openapi-v3-types      | TypeScript type definitions for OpenAPI Specifications |
 |[repository-json-schema](packages/repository-json-schema)  |@loopback/repository-json-schema| Convert a TypeScript class/model to a JSON Schema |

docs/apidocs.html

@@ -21,9 +21,7 @@ <h3>List of packages</h3>
         <li><a href="../packages/context/api-docs/index.html">@loopback/context</a></li>
         <li><a href="../packages/core/api-docs/index.html">@loopback/core</a></li>
         <li><a href="../packages/metadata/api-docs/index.html">@loopback/metadata</a></li>
-        <li><a href="../packages/openapi-spec/api-docs/index.html">@loopback/openapi-spec</a></li>
         <li><a href="../packages/openapi-spec-builder/api-docs/index.html">@loopback/openapi-spec-builder</a></li>
-        <li><a href="../packages/openapi-v2/api-docs/index.html">@loopback/openapi-v2</a></li>
         <li><a href="../packages/openapi-v3-types/api-docs/index.html">@loopback/openapi-v3-types</a></li>
         <li><a href="../packages/repository/api-docs/index.html">@loopback/repository</a></li>
         <li><a href="../packages/rest/api-docs/index.html">@loopback/rest</a></li>