Revert "#92 Kafka Connector (#109)"

This reverts commit 3bf2f60.

build.sbt

@@ -171,32 +171,6 @@ lazy val s3Connector = project
     Test / fork := true
   )
 
-lazy val kafkaConnector = project
-  .in(file("connectors/kafka-connector"))
-  .settings(stdSettings("zio-connect-kafka"))
-  .settings(
-    libraryDependencies ++= Seq(
-      KafkaDependencies.`zio-kafka`,
-      KafkaDependencies.`zio-kafka-test-utils`,
-      zio,
-      `zio-streams`,
-      `zio-test`,
-      `zio-test-sbt`
-    )
-  )
-  .settings(
-    libraryDependencies ++= {
-      CrossVersion.partialVersion(scalaVersion.value) match {
-        case Some((2, n)) if n <= 12 => Seq(`scala-compact-collection`)
-        case _                       => Seq.empty
-      }
-    }
-  )
-  .settings(
-    testFrameworks += new TestFramework("zio.test.sbt.ZTestFramework"),
-    Test / fork := true
-  )
-
 lazy val fs2Connector = project
   .in(file("connectors/fs2-connector"))
   .settings(stdSettings("zio-connect-fs2"))