Removed additional code

GLFW has been updated to latest version, probably this code is not
required any more due to already been integrated into library... but it
needs to be tested...

src/core.c

@@ -752,11 +752,7 @@ int GetScreenHeight(void)
 void ShowCursor()
 {
 #if defined(PLATFORM_DESKTOP)
-    #if defined(__linux__) && defined(_GLFW_X11)
-        XUndefineCursor(glfwGetX11Display(), glfwGetX11Window(window));
-    #else
-        glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
-    #endif
+    glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
 #endif
     cursorHidden = false;
 }
@@ -765,18 +761,7 @@ void ShowCursor()
 void HideCursor()
 {
 #if defined(PLATFORM_DESKTOP)
-    #if defined(__linux__) && defined(_GLFW_X11)
-        XColor col;
-        const char nil[] = {0};
-
-        Pixmap pix = XCreateBitmapFromData(glfwGetX11Display(), glfwGetX11Window(window), nil, 1, 1);
-        Cursor cur = XCreatePixmapCursor(glfwGetX11Display(), pix, pix, &col, &col, 0, 0);
-
-        XDefineCursor(glfwGetX11Display(), glfwGetX11Window(window), cur);
-        XFreeCursor(glfwGetX11Display(), cur);
-    #else
-        glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
-    #endif
+    glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
 #endif
     cursorHidden = true;
 }