wrappedkey: don't use twrp for processing anymore

Now in android-11 we can now process legacy and newer wrappedkey
support in our libfscrypt library. TWRP doesn't need to set a
property to check for wrapped key. libfscrypt will just process
wrappedkey fs_mgr flag for legacy wrapped key or wrappedkey_v0
for the newer wrapped key supported in android-11.

Change-Id: Ia94c7ebe34a05c9b25bbb7a5b2e899902c93d203
diff --git a/partitionmanager.cpp b/partitionmanager.cpp
index 5e98b06..2b8a3fd 100755
--- a/partitionmanager.cpp
+++ b/partitionmanager.cpp
@@ -419,18 +419,7 @@
 					usleep(500);
 				if (Decrypt_Data->Mount(false)) {
 					if (!Decrypt_Data->Decrypt_FBE_DE()) {
-						char wrappedvalue[PROPERTY_VALUE_MAX];
-						property_get("fbe.data.wrappedkey", wrappedvalue, "");
-						std::string wrappedkeyvalue(wrappedvalue);
-						if (wrappedkeyvalue == "true") {
-							LOGERR("Unable to decrypt FBE device\n");
-						} else {
-							LOGINFO("Trying wrapped key.\n");
-							property_set("fbe.data.wrappedkey", "true");
-							if (!Decrypt_Data->Decrypt_FBE_DE()) {
-								LOGERR("Unable to decrypt FBE device\n");
-							}
-						}
+						LOGERR("Unable to decrypt FBE device\n");
 					}
 
 				} else {