remove unused netty dependency (#356)

Co-authored-by: Ohad Bitton <ohbitton@microsoft.com>

ingest/pom.xml

@@ -169,10 +169,6 @@
             <groupId>com.azure</groupId>
             <artifactId>azure-core</artifactId>
         </dependency>
-        <dependency>
-            <groupId>com.azure</groupId>
-            <artifactId>azure-core-http-netty</artifactId>
-        </dependency>
         <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
         <dependency>
             <groupId>org.slf4j</groupId>