DEVX-1830 Removes Producer interceptors from example configs (#65)

Resolves #63

Author: rspurgeon

config/connector_pageviews.config

@@ -7,7 +7,6 @@
     "key.converter": "org.apache.kafka.connect.storage.StringConverter",
     "value.converter": "org.apache.kafka.connect.json.JsonConverter",
     "value.converter.schemas.enable": "false",
-    "producer.interceptor.classes": "io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor",
     "max.interval": 100,
     "iterations": 10000000,
     "tasks.max": "1"

config/connector_stock_trades.config

@@ -7,7 +7,6 @@
     "key.converter": "org.apache.kafka.connect.storage.StringConverter",
     "value.converter": "org.apache.kafka.connect.json.JsonConverter",
     "value.converter.schemas.enable": "false",
-    "producer.interceptor.classes": "io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor",
     "max.interval": 100,
     "iterations": 10000000,
     "tasks.max": "1"

config/connector_users.config

@@ -7,7 +7,6 @@
     "key.converter": "org.apache.kafka.connect.storage.StringConverter",
     "value.converter": "org.apache.kafka.connect.json.JsonConverter",
     "value.converter.schemas.enable": "false",
-    "producer.interceptor.classes": "io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor",
     "max.interval": 1000,
     "iterations": 10000000,
     "tasks.max": "1"

config/connector_users_protobuf.config

@@ -8,7 +8,6 @@
     "value.converter": "io.confluent.connect.protobuf.ProtobufConverter",
     "value.converter.schemas.enable": "false",
     "value.converter.schema.registry.url": "http://localhost:8081",
-    "producer.interceptor.classes": "io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor",
     "max.interval": 1000,
     "iterations": 10000000,
     "tasks.max": "1",