Cut more references to the tab picker onboarding

app/src/main/java/org/mozilla/fenix/home/sessioncontrol/SessionControlAdapter.kt

@@ -31,7 +31,6 @@ import org.mozilla.fenix.home.sessioncontrol.viewholders.onboarding.OnboardingMa
 import org.mozilla.fenix.home.sessioncontrol.viewholders.onboarding.OnboardingPrivacyNoticeViewHolder
 import org.mozilla.fenix.home.sessioncontrol.viewholders.onboarding.OnboardingPrivateBrowsingViewHolder
 import org.mozilla.fenix.home.sessioncontrol.viewholders.onboarding.OnboardingSectionHeaderViewHolder
-import org.mozilla.fenix.home.sessioncontrol.viewholders.onboarding.OnboardingTabsTrayLayoutViewHolder
 import org.mozilla.fenix.home.sessioncontrol.viewholders.onboarding.OnboardingThemePickerViewHolder
 import org.mozilla.fenix.home.sessioncontrol.viewholders.onboarding.OnboardingToolbarPositionPickerViewHolder
 import org.mozilla.fenix.home.sessioncontrol.viewholders.onboarding.OnboardingTrackingProtectionViewHolder
@@ -108,7 +107,6 @@ sealed class AdapterItem(@LayoutRes val viewType: Int) {
     object OnboardingFinish : AdapterItem(OnboardingFinishViewHolder.LAYOUT_ID)
     object OnboardingToolbarPositionPicker :
         AdapterItem(OnboardingToolbarPositionPickerViewHolder.LAYOUT_ID)
-    object OnboardingTabsTrayLayoutPicker : AdapterItem(OnboardingTabsTrayLayoutViewHolder.LAYOUT_ID)
 
     object OnboardingWhatsNew : AdapterItem(OnboardingWhatsNewViewHolder.LAYOUT_ID)
 
@@ -191,7 +189,6 @@ class SessionControlAdapter(
             OnboardingToolbarPositionPickerViewHolder.LAYOUT_ID -> OnboardingToolbarPositionPickerViewHolder(
                 view
             )
-            OnboardingTabsTrayLayoutViewHolder.LAYOUT_ID -> OnboardingTabsTrayLayoutViewHolder(view)
             else -> throw IllegalStateException()
         }
     }

app/src/main/java/org/mozilla/fenix/home/sessioncontrol/SessionControlView.kt

@@ -98,7 +98,6 @@ private fun onboardingAdapterItems(onboardingState: OnboardingState): List<Adapt
             AdapterItem.OnboardingThemePicker,
             AdapterItem.OnboardingPrivateBrowsing,
             AdapterItem.OnboardingToolbarPositionPicker,
-            AdapterItem.OnboardingTabsTrayLayoutPicker,
             AdapterItem.OnboardingPrivacyNotice,
             AdapterItem.OnboardingFinish
         )