gas: remove thresholdContext param from getSample()

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

src/gas/gas.cxx

@@ -92,7 +92,7 @@ Gas::getSampledData (thresholdContext* ctx) {
 }
 
 int
-Gas::getSample (thresholdContext* ctx) {
+Gas::getSample () {
     return mraa_aio_read (m_gasCtx);
 }
 

src/gas/gas.h

@@ -86,7 +86,7 @@ class Gas {
          *
          * @param ctx threshold context
          */
-        virtual int getSample (thresholdContext* ctx);
+        virtual int getSample ();
 
         /**
          *