Merge pull request #376 from jmespadero/jespa

Remove unused variable in Viewer.cpp 

Former-commit-id: f592320728f371f776f1653bfc8aa7d2ac061336

include/igl/viewer/Viewer.cpp

@@ -80,7 +80,7 @@ static igl::viewer::Viewer * __viewer;
 static double highdpi = 1;
 static double scroll_x = 0;
 static double scroll_y = 0;
-static int global_KMod = 0;
+//static int global_KMod = 0;
 
 static void glfw_mouse_press(GLFWwindow* window, int button, int action, int modifier)
 {