swig: disable a few warnings generated by pcb_shape.i, math.i and version.i

common/swig/math.i

@@ -29,6 +29,8 @@
 %ignore VECTOR2<int>::ECOORD_MAX;
 %ignore VECTOR2<int>::ECOORD_MIN;
 
+#pragma SWIG nowarn=317
+
 
 %rename(getWxPoint) operator wxPoint;
 %rename(getWxSize) operator wxSize;

pcbnew/python/swig/pcb_shape.i

@@ -1,4 +1,5 @@
 %ignore EDA_SHAPE::getCenter;
+#pragma SWIG nowarn=503
 
 %{
 #include <geometry/eda_angle.h>

pcbnew/python/swig/version.i

@@ -21,6 +21,9 @@
  * @file version.i
  * @brief KiCad version routine
  */
+
+#pragma SWIG nowarn=305
+
 %include kicad_build_version.h
 
 %pythoncode