Revert "matrix: IVibrator AIDL has version 2."

Revert submission 1540633

Reason for revert: AOSP not updated yet
Reverted Changes:
I418cd4fc5:Update AIDL IVibrator manifest version to 2.
I08b4b189d:matrix: IVibrator AIDL has version 2.

Change-Id: I429faacf309aa61aa044d72b873e23ba25ed5bca
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index 6de12f4..fef5d67 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -526,7 +526,6 @@
     </hal>
     <hal format="aidl" optional="true">
         <name>android.hardware.vibrator</name>
-        <version>1-2</version>
         <interface>
             <name>IVibrator</name>
             <instance>default</instance>