Remove hardcoded min, targetSDK for 'R' modules

BUG: 130541924
Change-Id: Ib3dbbc74ca8c200def98def4badda3e7f61bd396
Exempt-From-Owner-Approval: baligh@ approving to unblock TM
diff --git a/Android.bp b/Android.bp
index 6e50459..d05dcb8 100644
--- a/Android.bp
+++ b/Android.bp
@@ -20,7 +20,6 @@
     // a classes.dex.
     srcs: ["src/**/*.java"],
     platform_apis: true,
-    min_sdk_version: "28",
     privileged: true,
     manifest: "AndroidManifest.xml",
 }
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index d7ba42a..073784c 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -21,8 +21,9 @@
     android:sharedUserId="android.uid.networkstack"
     android:versionCode="300000000"
     android:versionName="2019-09"
->
-    <uses-sdk android:minSdkVersion="29" android:targetSdkVersion="29" />
+  >
+  <!-- TODO: Uncomment this when the R API level is fixed. b/148281152 -->
+  <!--uses-sdk android:minSdkVersion="29" android:targetSdkVersion="29" />-->
     <!--
     This package only exists to define the below permissions, and enforce that they are only
     granted to apps sharing the same signature.