Refactored how/when python interpretor is created to simplify library usage

tools/Matcher/main.cpp

@@ -42,9 +42,6 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <rtabmap/utilite/UFile.h>
 #include <rtabmap/utilite/UStl.h>
 #include <rtabmap/utilite/UTimer.h>
-#ifdef RTABMAP_PYTHON
-#include <rtabmap/core/PythonInterface.h>
-#endif
 #include <fstream>
 #include <string>
 #include <QApplication>
@@ -186,10 +183,6 @@ int main(int argc, char * argv[])
 		printf("  --raw (images will be rectified)\n");
 	}
 
-#ifdef RTABMAP_PYTHON
-	rtabmap::PythonInterface pythonInterface;
-#endif
-
 	ParametersMap parameters = Parameters::parseArguments(argc, argv);
 	parameters.insert(ParametersPair(Parameters::kRegRepeatOnce(), "false"));