omni: Drop Launcher3 hotseatColumnSpanLandscape overlay

after https://github.com/omnirom/android_packages_apps_Launcher3/commit/e4b0b71faac89f773bd7b8d094fe0331661ff916

Change-Id: Id304b998284196677b782557d64dfcb89e0e72c7
diff --git a/overlay/common/packages/apps/Launcher3/quickstep/res/xml/device_profiles.xml b/overlay/common/packages/apps/Launcher3/quickstep/res/xml/device_profiles.xml
index 63aa22f..dee0ef8 100644
--- a/overlay/common/packages/apps/Launcher3/quickstep/res/xml/device_profiles.xml
+++ b/overlay/common/packages/apps/Launcher3/quickstep/res/xml/device_profiles.xml
@@ -210,7 +210,6 @@
         launcher:numFolderRows="3"
         launcher:numFolderColumns="3"
         launcher:numHotseatIcons="6"
-        launcher:hotseatColumnSpanLandscape="4"
         launcher:numAllAppsColumns="6"
         launcher:isScalable="true"
         launcher:inlineNavButtonsEndSpacing="@dimen/taskbar_button_margin_6_5"