Keystore 2.0: Remove Keystore 1.0 and remaining references

* Remove superseded keystore engine backends.
* Remove keystore_cli.
* Update keystoer_cli_v2 to use Keystore 2.0.
* Update confirmationui invocation test.
* Remove reference to enable keystore2 property from keystore2.rc.

Test: N/A
Bug: 171305684

Change-Id: I855dead9d95c2c8cfa451944087bc8290871c0e5

keystore-engine/Android.bp

@@ -26,7 +26,6 @@ cc_library_shared {
 
     srcs: [
         "android_engine.cpp",
-        "keystore_backend_binder.cpp",
         "keystore2_engine.cpp",
     ],
 
@@ -38,47 +37,40 @@ cc_library_shared {
 
     shared_libs: [
         "android.system.keystore2-V1-ndk_platform",
-        "libbinder",
         "libbinder_ndk",
         "libcrypto",
         "libcutils",
-        "libhidlbase",
-        "libkeystore_aidl",
-        "libkeystore_binder",
-        "libkeystore_parcelables",
         "liblog",
         "libbase",
         "libutils",
     ],
 
 }
 
-// This builds a variant of libkeystore-engine that uses a HIDL HAL
-// owned by the WiFi user to perform signing operations.
+// This builds a variant of libkeystore-engine that is available vendor.
+// It used to use a HIDL interface to connect to keystore through wificond.
+// Now That Keystore 2.0 has a vintf stable interface this library is
+// actually identical to libkeystore-engine.
 cc_library_shared {
     name: "libkeystore-engine-wifi-hidl",
 
     srcs: [
         "android_engine.cpp",
-        "keystore_backend_hidl.cpp",
         "keystore2_engine.cpp",
     ],
 
     cflags: [
         "-fvisibility=hidden",
         "-Wall",
         "-Werror",
-        "-DBACKEND_WIFI_HIDL",
     ],
 
     shared_libs: [
         "android.system.keystore2-V1-ndk_platform",
-        "[email protected]",
         "libbase",
         "libbinder_ndk",
         "libcrypto",
         "liblog",
-        "libhidlbase",
         "libcutils",
         "libutils",
     ],