tdf#102040 Don't type doubled characters when using external keyboard.

Typically application should handle key press/release and multiple 
actions. The onKeyPreIme may be used to handle some keys early and it's 
not needed for writing text. And even if there would be a reason to use 
it, then it should return true to notify that the event was handled 
(otherwise we will get onKeyDown event for the same key).

Change-Id: I49ce7f411fac92ff86ca042a7f7467e910e46350
Reviewed-on: https://gerrit.libreoffice.org/66708
Tested-by: Jenkins
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>
diff --git a/android/source/src/java/org/libreoffice/LOKitInputConnectionHandler.java b/android/source/src/java/org/libreoffice/LOKitInputConnectionHandler.java
index 804e726..bbef709 100644
--- a/android/source/src/java/org/libreoffice/LOKitInputConnectionHandler.java
+++ b/android/source/src/java/org/libreoffice/LOKitInputConnectionHandler.java
@@ -31,7 +31,6 @@
     */
    @Override
    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
        LOKitShell.sendKeyEvent(event);
        return false;
    }