mraajava.i: Ignore read/write functions (in UART)

Signed-off-by: Petre Eftime <petre.p.eftime@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

src/java/mraajava.i

@@ -53,6 +53,9 @@ class Spi;
 }
 }
 
+%ignore write(const char* data, int length);
+%ignore read(char* data, int length);
+
 %feature("director") IsrCallback;
 %include ../mraa.i