Remove main export for the apache-annotator meta-package

Reduce the number of different ways to import modules by removing the
main export for the apache-annotator meta-package.

Consumers can import from apache-annotator/<package> or use the scoped
packages in @apache-annotator/<package>, but not from named exports of a
main module for the meta-package.

This setup provides a nice symmetry to the import styles.
diff --git a/packages/apache-annotator/package.json b/packages/apache-annotator/package.json
index 8b1b7ef..17dffb2 100644
--- a/packages/apache-annotator/package.json
+++ b/packages/apache-annotator/package.json
@@ -11,22 +11,11 @@
   "license": "Apache-2.0",
   "author": "Apache Software Foundation",
   "exports": {
-    ".": {
-      "import": "./lib/index.mjs",
-      "require": "./lib/index.js"
-    },
-    "./dom": {
-      "import": "./lib/dom/index.mjs",
-      "require": "./lib/dom/index.js"
-    },
-    "./selector": {
-      "import": "./lib/selector/index.mjs",
-      "require": "./lib/selector/index.js"
+    "./*": {
+      "import": "./lib/*.mjs",
+      "require": "./lib/*.js"
     }
   },
-  "main": "./lib/index.js",
-  "module": "./lib/index.mjs",
-  "types": "./lib/index.d.ts",
   "dependencies": {
     "@apache-annotator/dom": "^0.1.0",
     "@apache-annotator/selector": "^0.1.0",
diff --git a/packages/apache-annotator/src/dom/index.ts b/packages/apache-annotator/src/dom.ts
similarity index 100%
rename from packages/apache-annotator/src/dom/index.ts
rename to packages/apache-annotator/src/dom.ts
diff --git a/packages/apache-annotator/src/index.ts b/packages/apache-annotator/src/index.ts
deleted file mode 100644
index 98c8279..0000000
--- a/packages/apache-annotator/src/index.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-/**
- * @license
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-export * as dom from '@apache-annotator/dom';
-export * as selector from '@apache-annotator/selector';
diff --git a/packages/apache-annotator/src/selector/index.ts b/packages/apache-annotator/src/selector.ts
similarity index 100%
rename from packages/apache-annotator/src/selector/index.ts
rename to packages/apache-annotator/src/selector.ts