[web] Remove classes builder version from API

web/core/src/jsMain/kotlin/androidx/compose/web/attributes/AttrsBuilder.kt

@@ -18,9 +18,6 @@ class AttrsBuilder<TTag : Tag> : EventsListenerBuilder() {
         styleBuilder.apply(builder)
     }
 
-    inline fun classes(builder: ClassesAttrBuilder.() -> Unit) =
-        prop(setClassList, ClassesAttrBuilder().apply(builder).asList().toTypedArray())
-
     fun classes(vararg classes: String) = prop(setClassList, classes)
 
     fun id(value: String) = attr(ID, value)
@@ -70,17 +67,6 @@ class AttrsBuilder<TTag : Tag> : EventsListenerBuilder() {
     }
 }
 
-class ClassesAttrBuilder {
-    private val classes = mutableListOf<String>()
-
-    operator fun String.unaryPlus() {
-        classes.add(this)
-    }
-
-    fun asList(): List<String> = classes
-    fun asString(): String = classes.joinToString(" ")
-}
-
 val setClassList: (HTMLElement, Array<out String>) -> Unit = { e, classList ->
     e.classList.add(*classList)
 }

web/core/src/jsTest/kotlin/elements/AttributesTests.kt

@@ -99,52 +99,13 @@ class AttributesTests {
     }
 
     @Test
-    fun multipleClassesBuildersCallsAddMoreClasses() = runTest {
-        composition {
-            Div({
-                classes("a", "b")
-                classes {
-                    +"c"
-                    +"d"
-                }
-            }) {}
-        }
-
-        val div = root.firstChild as HTMLDivElement
-        assertEquals(
-            expected = "a b c d",
-            actual = div.getAttribute("class")
-        )
-    }
-
-
-    @Test
-    fun multipleClassesBuildersCallsAddMoreClasses2() = runTest {
-        composition {
-            Div({
-                classes {
-                    +"c"
-                    +"d"
-                }
-                classes("a", "b")
-            }) {}
-        }
-
-        val div = root.firstChild as HTMLDivElement
-        assertEquals(
-            expected = "c d a b",
-            actual = div.getAttribute("class")
-        )
-    }
-
-    @Test
-    fun multipleClassesBuildersCallsWithConditionsAddCorrectClasses() = runTest {
+    fun multipleClassesCallsWithConditionsAddCorrectClasses() = runTest {
         val addClassD = mutableStateOf(true)
         composition {
             Div({
-                classes {
-                    +"c"
-                    if (addClassD.value) +"d"
+                classes("c")
+                if (addClassD.value) {
+                    classes("d")
                 }
                 classes("a", "b")
             }) {}