Revert "Deliver tag in clean state to user app"

This fix has some unexpected side effects; reconnecting to ISO15693 tags fails,
and on NfcA tags the first present check after the second connect fails. Until
those issues are fixed, revert this change.
This reverts commit 75e511b45b7c236d32cbb8179ae1ccb7a21e3d21.
diff --git a/src/com/android/nfc/NfcService.java b/src/com/android/nfc/NfcService.java
index 187eeab..9553671 100755
--- a/src/com/android/nfc/NfcService.java
+++ b/src/com/android/nfc/NfcService.java
@@ -2401,7 +2401,6 @@
                    if (nativeTag.checkNdef()) {
                        boolean generateEmptyIntent = false;
                        byte[] buff = nativeTag.read();
-                       nativeTag.connect(); // reset the tag
                        if (buff != null) {
                            NdefMessage[] msgNdef = new NdefMessage[1];
                            try {
@@ -2449,7 +2448,6 @@
                                nativeTag.getTechList(),
                                nativeTag.getTechExtras(),
                                nativeTag.getHandle());
-                       nativeTag.connect(); // reset the tag
                        Intent intent = buildTagIntent(tag, null);
                        if (DBG) Log.d(TAG, "Non-NDEF tag found, starting corresponding activity");
                        if (DBG) Log.d(TAG, tag.toString());