Removed dependencies to tika and slf4j dependencies (not used in this project)

Author: kaiwaehner

pom.xml

@@ -33,8 +33,6 @@
 			com.github.megachucky.kafka.streams.machinelearning.Kafka_Streams_TensorFlow_Serving_gRPC_Example</exec.mainClass>
 		<grpc.version>1.13.1</grpc.version>
 		<protobuf.version>3.6.0</protobuf.version>
-		<tika.version>1.14-SNAPSHOT</tika.version>
-		<slf4j.version>1.7.12</slf4j.version>
 		<java.version>1.8</java.version>
 		<kafka.version>1.1.1-cp1</kafka.version>
 		<kafka.scala.version>2.11</kafka.scala.version>
@@ -82,16 +80,7 @@
 			<artifactId>grpc-netty</artifactId>
 			<version>${grpc.version}</version>
 		</dependency>
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>slf4j-api</artifactId>
-			<version>${slf4j.version}</version>
-		</dependency>
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>slf4j-log4j12</artifactId>
-			<version>${slf4j.version}</version>
-		</dependency>
+