remove code (#2414)

* remove code

* fix

* fmt

zio-http/src/main/scala/zio/http/template/IsAttributeValue.scala

@@ -22,24 +22,21 @@ import scala.language.implicitConversions
  * Checks if the value A can be represented as a valid html attribute.
  */
 sealed trait IsAttributeValue[-A] {
-  implicit def apply(a: A): String
+  def apply(a: A): String
 }
 
 object IsAttributeValue {
-  implicit def fromString: IsAttributeValue[String] = new IsAttributeValue[String] {
+  implicit val instanceString: IsAttributeValue[String] = new IsAttributeValue[String] {
     override def apply(a: String): String = a
   }
 
-  implicit def fromInt: IsAttributeValue[Int] = new IsAttributeValue[Int] {
-    override def apply(a: Int): String = a.toString
-  }
-
-  implicit def fromList: IsAttributeValue[Seq[String]] = new IsAttributeValue[Seq[String]] {
+  implicit val instanceList: IsAttributeValue[Seq[String]] = new IsAttributeValue[Seq[String]] {
     override def apply(a: Seq[String]): String = a.mkString(" ")
   }
 
-  implicit def fromTuple2Seq: IsAttributeValue[Seq[(String, String)]] = new IsAttributeValue[Seq[(String, String)]] {
-    override def apply(a: Seq[(String, String)]): String =
-      a.map { case (k, v) => s"""${k}:${v}""" }.mkString(";")
-  }
+  implicit val instanceTuple2Seq: IsAttributeValue[Seq[(String, String)]] =
+    new IsAttributeValue[Seq[(String, String)]] {
+      override def apply(a: Seq[(String, String)]): String =
+        a.map { case (k, v) => s"""${k}:${v}""" }.mkString(";")
+    }
 }