Delete example-kotlin now that grpc-kotlin 0.1.1 is out

.travis.yml

@@ -28,7 +28,6 @@ install:
  - pushd examples/example-hostname && ../gradlew build && popd
  - pushd examples/example-hostname && mvn verify && popd
  - pushd examples/example-tls && ../gradlew clean build && popd
- - pushd examples/example-kotlin && ../gradlew build && popd
  - pushd examples/example-xds && ../gradlew build && popd
 
 before_script:

RELEASING.md

@@ -46,8 +46,6 @@ $ VERSION_FILES=(
  examples/example-jwt-auth/pom.xml
  examples/example-hostname/build.gradle
  examples/example-hostname/pom.xml
- examples/example-kotlin/build.gradle
- examples/example-kotlin/android/helloworld/app/build.gradle
  examples/example-tls/build.gradle
  examples/example-tls/pom.xml
  examples/example-xds/build.gradle

buildscripts/kokoro/android.sh

@@ -56,9 +56,6 @@ cd ../routeguide
 cd ../helloworld
 ../../gradlew build
 
-cd "$BASE_DIR/github/grpc-java/examples/example-kotlin/android/helloworld/"
-../../../gradlew build
-
 # Skip APK size and dex count comparisons for non-PR builds
 
 if [[ -z "${KOKORO_GITHUB_PULL_REQUEST_COMMIT:-}" ]]; then

examples/README.md

@@ -158,10 +158,6 @@ $ bazel-bin/hello-world-client
 
 - [JWT-based Authentication](example-jwt-auth)
 
-- [Kotlin examples](example-kotlin)
-
-- [Kotlin Android examples](example-kotlin/android)
-
 ## Unit test examples
 
 Examples for unit testing gRPC clients and servers are located in [examples/src/test](src/test).
@@ -174,7 +170,7 @@ examples to write unit tests. `InProcessTransport` is light-weight and runs the
 and client in the same process without any socket/TCP connection.
 
 Mocking the client stub provides a false sense of security when writing tests. Mocking stubs and responses
-allows for tests that don't map to reality, causing the tests to pass, but the system-under-test to fail. 
+allows for tests that don't map to reality, causing the tests to pass, but the system-under-test to fail.
 The gRPC client library is complicated, and accurately reproducing that complexity with mocks is very hard.
 You will be better off and write less code by using `InProcessTransport` instead.