java: Use Runnables instead of IsrCallbacks in Java

Signed-off-by: Petre Eftime <petre.p.eftime@intel.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

src/ttp223/javaupm_ttp223.i

@@ -1,12 +1,7 @@
-%module (directors=1, docstring="TTP223 Touch Sensor") javaupm_ttp223
+%module (docstring="TTP223 Touch Sensor") javaupm_ttp223
 
 %include "../upm.i"
 
-%feature("director") IsrCallback;
-SWIG_DIRECTOR_OWNED(IsrCallback)
-%ignore generic_callback_isr;
-%include "../IsrCallback.h"
-
 %apply int {mraa::Edge}
 
 
@@ -25,4 +20,4 @@ SWIG_DIRECTOR_OWNED(IsrCallback)
             System.exit(1);
         }
     }
-%}
+%}