Revert "gitpodded kafka producer tutorial"

This reverts commit b84a401.

Author: davetroiano

.gitignore

@@ -29,6 +29,3 @@ harness_runner/harness_runner.pyc
 
 # Ignore Gradle build output directory
 build
-
-# Ignore this directory that gets used for gitpod tutorials
-tutorial-workspace

_data/stacks.yaml

@@ -13,9 +13,6 @@ kafka:
 confluent:
   pretty: Confluent
 
-gitpod:
-  pretty: Gitpod
-
 # use for the produce-consume-lang tutorial only
 c:
   pretty: C

_data/tutorials.yaml

@@ -604,20 +604,19 @@ streams-to-table:
     kafka: disabled
     confluent: enabled
 kafka-producer-application:
-  title: How to build your first Apache Kafka producer application
+  title: How to build your first Apache KafkaProducer application
   meta-description: build your first Kafka producer application
   canonical: confluent
   slug: /creating-first-apache-kafka-producer-application
   question: How do you get started building your first Kafka producer application?
-  introduction: You'd like to integrate a Kafka producer into your event-driven application,
+  introduction: You'd like to integrate a KafkaProducer into your event-driven application,
     but you're not sure where to start. In this tutorial, you'll build a small application
-    that uses a Kafka producer to write records to Kafka.
+    that uses a KafkaProducer to write records to Kafka.
   status:
     ksql: disabled
     kstreams: disabled
     kafka: enabled
     confluent: enabled
-    gitpod: enabled
 kafka-producer-application-callback:
   title: How to build an Apache KafkaProducer application with callbacks
   meta-description: build an Kafka producer application and handle responses using