docs(aio): remove example specific `.gitignore` files

All the files that should be ignored are defined in the
`aio/content/examples/.gitigore` folder.

aio/content/examples/animations/.gitignore

@@ -1 +0,0 @@
-**/*.js

aio/content/examples/aot-compiler/.gitignore

@@ -1,7 +0,0 @@
-**/*.ngfactory.ts
-**/*.ngsummary.json
-**/*.shim.ngstyle.ts
-**/*.metadata.json
-dist
-!app/tsconfig.json
-!rollup-config.js

aio/content/examples/cli-quickstart/.gitignore

@@ -1,45 +0,0 @@
-# See http://help.github.com/ignore-files/ for more about ignoring files.
-
-# compiled output
-/dist
-/tmp
-
-# dependencies
-/node_modules
-
-# IDEs and editors
-/.idea
-.project
-.classpath
-.c9/
-*.launch
-.settings/
-*.sublime-workspace
-
-# IDE - VSCode
-.vscode/*
-!.vscode/settings.json
-!.vscode/tasks.json
-!.vscode/launch.json
-!.vscode/extensions.json
-
-# misc
-/.sass-cache
-/connect.lock
-/coverage/*
-/libpeerconnection.log
-npm-debug.log
-testem.log
-/typings
-
-# e2e
-/e2e/*.js
-/e2e/*.map
-
-#System Files
-.DS_Store
-Thumbs.db
-
-!src/styles.css
-!karma.conf.js
-!protractor.conf.js

aio/content/examples/component-interaction/.gitignore

@@ -1 +0,0 @@
-**/*.js

aio/content/examples/deployment/.gitignore

@@ -1 +0,0 @@
-!systemjs.config.server.js

aio/content/examples/i18n/.gitignore

@@ -1,6 +0,0 @@
-**/*.ngfactory.ts
-**/*.metadata.json
-dist
-!app/tsconfig.json
-!rollup.js
-!src/systemjs-text-plugin.js

aio/content/examples/styleguide/.gitignore

@@ -1,2 +0,0 @@
-*.js
-!systemjs.custom.js

aio/content/examples/testing/.gitignore

@@ -1 +0,0 @@
-!src/browser-test-shim.js

aio/content/examples/universal/.gitignore

@@ -1,8 +0,0 @@
-aot/**/*.ts
-**/*.ngfactory.ts
-**/*.ngsummary.json
-**/*.metadata.json
-**/*.js
-dist
-!app/tsconfig.json
-!/*.js

aio/content/examples/upgrade-phonecat-1-typescript/.gitignore

@@ -1 +0,0 @@
-!karma.conf.ajs.js

aio/content/examples/upgrade-phonecat-2-hybrid/.gitignore

@@ -1,8 +0,0 @@
-aot/**/*
-!aot/index.html
-dist
-!app/tsconfig.json
-!rollup-config.js
-!karma.conf.ajs.js
-!copy-dist-files.js
-!systemjs.config.1.js

aio/content/examples/visual-studio-2015/.gitignore

@@ -1 +0,0 @@
-!tsconfig.json

aio/content/examples/webpack/.gitignore

@@ -1,5 +0,0 @@
-dist
-!karma.webpack.conf.js
-!webpack.config.js
-!config/*
-!public/css/styles.css