chore: another round of polishing

Author: meistermeier

common/src/main/kotlin/org/neo4j/connectors/kafka/configuration/helpers/ConfigUtils.kt

@@ -40,10 +40,6 @@ class ConfigKeyBuilder private constructor(name: String, type: ConfigDef.Type) {
   var recommender: ConfigDef.Recommender? = null
   var internalConfig: Boolean
 
-  private constructor(group: String, name: String, type: ConfigDef.Type) : this(name, type) {
-    this.group = group
-  }
-
   init {
     documentation = ""
     defaultValue = ConfigDef.NO_DEFAULT_VALUE
@@ -77,22 +73,11 @@ class ConfigKeyBuilder private constructor(name: String, type: ConfigDef.Type) {
 
   companion object {
     fun of(
-        group: String,
         name: String,
         type: ConfigDef.Type,
         init: ConfigKeyBuilder.() -> Unit
     ): ConfigDef.ConfigKey {
-      val builder = ConfigKeyBuilder(group, name, type)
-      init(builder)
-      return builder.build()
-    }
-
-    fun of(
-        group: String,
-        type: ConfigDef.Type,
-        init: ConfigKeyBuilder.() -> Unit
-    ): ConfigDef.ConfigKey {
-      val builder = ConfigKeyBuilder(group, type)
+      val builder = ConfigKeyBuilder(name, type)
       init(builder)
       return builder.build()
     }