[FIR] Make EnhancedTypeForWarningAttribute a data class

(cherry picked from commit 76898ddb0f)

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/enhancement/EnhancedTypeForWarningAttribute.kt

@@ -10,7 +10,7 @@ import org.jetbrains.kotlin.fir.resolve.substitution.AbstractConeSubstitutor
 import org.jetbrains.kotlin.fir.types.*
 import kotlin.reflect.KClass
 
-class EnhancedTypeForWarningAttribute(
+data class EnhancedTypeForWarningAttribute(
     override val coneType: ConeKotlinType,
     val isDeprecation: Boolean,
 ) : ConeAttributeWithConeType<EnhancedTypeForWarningAttribute>() {
@@ -29,24 +29,6 @@ class EnhancedTypeForWarningAttribute(
 
     override val implementsEquality: Boolean
         get() = true
-
-    override fun equals(other: Any?): Boolean {
-        if (this === other) return true
-        if (javaClass != other?.javaClass) return false
-
-        other as EnhancedTypeForWarningAttribute
-
-        if (coneType != other.coneType) return false
-        if (isDeprecation != other.isDeprecation) return false
-
-        return true
-    }
-
-    override fun hashCode(): Int {
-        var result = coneType.hashCode()
-        result = 31 * result + isDeprecation.hashCode()
-        return result
-    }
 }
 
 val ConeAttributes.enhancedTypeForWarning: EnhancedTypeForWarningAttribute? by ConeAttributes.attributeAccessor<EnhancedTypeForWarningAttribute>()