Revert "Add maxTargetSdk restriction to unused APIs."

This reverts commit 72f07d6a8a.

Reason for revert: Droidcop-triggered revert due to breakage https://android-build.googleplex.com/builds/quarterdeck?testMethod=testAppZygotePreload&testClass=android.app.cts.ServiceTest&atpConfigName=suite%2Ftest-mapping-presubmit-retry_cloud-tf&testModule=CtsAppTestCases&fkbb=6936597&lkbb=6936969&lkgb=6936551&testResults=true&branch=git_master&target=cf_x86_phone-userdebug>, bug b/171886397

Bug: 171886397
Change-Id: Ibe0f0430a3451477c1ee8ef56a596e91ea1e7672

rs/java/android/renderscript/ProgramStore.java

@@ -17,7 +17,6 @@
 package android.renderscript;
 
 import android.compat.annotation.UnsupportedAppUsage;
-import android.os.Build;
 
 
 /**
@@ -309,7 +308,7 @@ public class ProgramStore extends BaseObj {
     *
     *  @param rs Context to which the program will belong.
     **/
-    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
+    @UnsupportedAppUsage
     public static ProgramStore BLEND_ALPHA_DEPTH_NONE(RenderScript rs) {
         if(rs.mProgramStore_BLEND_ALPHA_DEPTH_NO_DEPTH == null) {
             ProgramStore.Builder builder = new ProgramStore.Builder(rs);