zenfone9: rro_overlays: Drop explicit 'sdk_version' declaration

* We don't need to manually set this anymore.

Change-Id: I1239ba541636e53f8ea4373d3815024f2cd60824
diff --git a/rro_overlays/FrameworksResOverlay/Android.bp b/rro_overlays/FrameworksResOverlay/Android.bp
index 5104f73..de4706c 100644
--- a/rro_overlays/FrameworksResOverlay/Android.bp
+++ b/rro_overlays/FrameworksResOverlay/Android.bp
@@ -1,6 +1,5 @@
 runtime_resource_overlay {
     name: "FrameworksResOverlay",
     theme: "FrameworksResOverlay",
-    sdk_version: "current",
     product_specific: true,
 }
diff --git a/rro_overlays/OmniRomResInternalOverlay/Android.bp b/rro_overlays/OmniRomResInternalOverlay/Android.bp
index 0d31e3d..9161bf3 100644
--- a/rro_overlays/OmniRomResInternalOverlay/Android.bp
+++ b/rro_overlays/OmniRomResInternalOverlay/Android.bp
@@ -1,6 +1,5 @@
 runtime_resource_overlay {
     name: "OmniRomResInternalOverlay",
     theme: "OmniRomResInternalOverlay",
-    sdk_version: "current",
     product_specific: true,
 }
diff --git a/rro_overlays/SettingsOverlay/Android.bp b/rro_overlays/SettingsOverlay/Android.bp
index c1e0f9a..6ef8549 100644
--- a/rro_overlays/SettingsOverlay/Android.bp
+++ b/rro_overlays/SettingsOverlay/Android.bp
@@ -1,6 +1,5 @@
 runtime_resource_overlay {
     name: "SettingsOverlay",
     theme: "SettingsOverlay",
-    sdk_version: "current",
     product_specific: true,
 }
diff --git a/rro_overlays/SettingsProviderOverlay/Android.bp b/rro_overlays/SettingsProviderOverlay/Android.bp
index 7483af5..fce8d99 100644
--- a/rro_overlays/SettingsProviderOverlay/Android.bp
+++ b/rro_overlays/SettingsProviderOverlay/Android.bp
@@ -1,6 +1,5 @@
 runtime_resource_overlay {
     name: "SettingsProviderOverlay",
     theme: "SettingsProviderOverlay",
-    sdk_version: "current",
     product_specific: true,
 }
diff --git a/rro_overlays/SystemUIOverlay/Android.bp b/rro_overlays/SystemUIOverlay/Android.bp
index 774623e..e85ec93 100644
--- a/rro_overlays/SystemUIOverlay/Android.bp
+++ b/rro_overlays/SystemUIOverlay/Android.bp
@@ -1,6 +1,5 @@
 runtime_resource_overlay {
     name: "SystemUIOverlay",
     theme: "SystemUIOverlay",
-    sdk_version: "current",
     product_specific: true,
 }
diff --git a/rro_overlays/TetheringOverlay/Android.bp b/rro_overlays/TetheringOverlay/Android.bp
index b23c55c..934a62a 100644
--- a/rro_overlays/TetheringOverlay/Android.bp
+++ b/rro_overlays/TetheringOverlay/Android.bp
@@ -17,6 +17,5 @@
 runtime_resource_overlay {
     name: "TetheringConfigOverlay",
     theme: "TetheringConfigOverlay",
-    sdk_version: "current",
     product_specific: true
 }
diff --git a/rro_overlays/WifiOverlay/Android.bp b/rro_overlays/WifiOverlay/Android.bp
index c2089a1..bddfdc3 100644
--- a/rro_overlays/WifiOverlay/Android.bp
+++ b/rro_overlays/WifiOverlay/Android.bp
@@ -1,6 +1,5 @@
 runtime_resource_overlay {
     name: "WifiOverlay",
     theme: "WifiOverlay",
-    sdk_version: "current",
     product_specific: true
 }