Remove DaxExpandableMenu (#6954)

Task/Issue URL:
https://app.asana.com/1/137249556945/project/1207908166761516/task/1211670072079710?focus=true

### Description

Removed the expandable layout component from the design system as it's
no longer needed. This includes removing the `DaxExpandableMenu`,
`DaxExpandableMenuItem`, and related files, as well as removing the
component from the theme preview.

### Steps to test this PR

_Verify component removal_

- [x] Check that the expandable layout component is no longer available
in the theme preview
- [x] Verify that the design system builds correctly without the removed
components
- [x] Ensure no references to the removed components remain in the
codebase

### UI changes

N/A

Author: mikescamell

design-system/src/main/java/com/duckduckgo/common/ui/themepreview/ui/component/Component.kt

@@ -19,7 +19,6 @@ package com.duckduckgo.common.ui.themepreview.ui.component
 enum class Component {
     BUTTON,
     FAB,
-    EXPANDABLE_LAYOUT,
     CARD,
     TOP_APP_BAR,
     CHIP,

design-system/src/main/java/com/duckduckgo/common/ui/themepreview/ui/component/ComponentViewHolder.kt

@@ -22,14 +22,10 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.FrameLayout
-import android.widget.LinearLayout
 import androidx.recyclerview.widget.RecyclerView
 import com.duckduckgo.common.ui.view.MessageCta
 import com.duckduckgo.common.ui.view.MessageCta.Message
 import com.duckduckgo.common.ui.view.MessageCta.MessageType.REMOTE_PROMO_MESSAGE
-import com.duckduckgo.common.ui.view.button.DaxButtonSecondary
-import com.duckduckgo.common.ui.view.expand.DaxExpandableMenuItem
-import com.duckduckgo.common.ui.view.expand.daxExpandableMenuItem
 import com.duckduckgo.common.ui.view.listitem.OneLineListItem
 import com.duckduckgo.common.ui.view.listitem.SectionHeaderListItem
 import com.duckduckgo.common.ui.view.listitem.TwoLineListItem
@@ -351,44 +347,6 @@ sealed class ComponentViewHolder(val view: View) : RecyclerView.ViewHolder(view)
         }
     }
 
-    class ExpandableComponentViewHolder(parent: ViewGroup) : ComponentViewHolder(inflate(parent, R.layout.component_expandable_layout)) {
-        override fun bind(component: Component) {
-            view.findViewById<DaxExpandableMenuItem>(R.id.expandable1).apply {
-                setPrimaryButtonClickListener {
-                    Snackbar.make(this, component.name, Snackbar.LENGTH_SHORT).show()
-                }
-            }
-            view.findViewById<DaxExpandableMenuItem>(R.id.expandable3).customExpandedLayout?.apply {
-                findViewById<DaxButtonSecondary>(R.id.daxExpandableMenuItemSecondaryButton).apply {
-                    setOnClickListener {
-                        Snackbar.make(this, component.name, Snackbar.LENGTH_SHORT).show()
-                    }
-                }
-            }
-            view.findViewById<DaxExpandableMenuItem>(R.id.expandable4).apply {
-                LayoutInflater.from(context).inflate(R.layout.view_expandable_menu_item_expanded_layout_demo, this, false).apply {
-                    findViewById<DaxButtonSecondary>(R.id.daxExpandableMenuItemSecondaryButton).apply {
-                        setOnClickListener {
-                            Snackbar.make(this, component.name, Snackbar.LENGTH_SHORT).show()
-                        }
-                    }
-                    setExpandableMenuCustomLayout(this)
-                }
-            }
-
-            view.findViewById<LinearLayout>(R.id.expandableItemRootLayout).apply {
-                val expandableMenuItem = context.daxExpandableMenuItem {
-                    setPrimaryText("This is a Menu Item")
-                    setSecondaryText("Created using DSL")
-                    setPrimaryButtonClickListener {
-                        Snackbar.make(rootView, component.name, Snackbar.LENGTH_SHORT).show()
-                    }.build()
-                }
-                addView(expandableMenuItem)
-            }
-        }
-    }
-
     class SettingsListItemComponentViewHolder(parent: ViewGroup) :
         ComponentViewHolder(inflate(parent, R.layout.component_settings))
 
@@ -415,7 +373,6 @@ sealed class ComponentViewHolder(val view: View) : RecyclerView.ViewHolder(view)
                 Component.TWO_LINE_LIST_ITEM -> TwoLineItemComponentViewHolder(parent)
                 Component.SECTION_DIVIDER -> DividerComponentViewHolder(parent)
                 Component.CARD -> CardComponentViewHolder(parent)
-                Component.EXPANDABLE_LAYOUT -> ExpandableComponentViewHolder(parent)
                 Component.SETTINGS_LIST_ITEM -> SettingsListItemComponentViewHolder(parent)
                 else -> {
                     TODO()

design-system/src/main/java/com/duckduckgo/common/ui/themepreview/ui/component/cards/ComponentLayoutsFragment.kt

@@ -17,11 +17,10 @@
 package com.duckduckgo.common.ui.themepreview.ui.component.cards
 
 import com.duckduckgo.common.ui.themepreview.ui.component.Component
-import com.duckduckgo.common.ui.themepreview.ui.component.Component.EXPANDABLE_LAYOUT
 import com.duckduckgo.common.ui.themepreview.ui.component.ComponentFragment
 
 class ComponentLayoutsFragment : ComponentFragment() {
     override fun getComponents(): List<Component> {
-        return listOf(EXPANDABLE_LAYOUT, Component.CARD)
+        return listOf(Component.CARD)
     }
 }