scenes/opengl: Remove Mesa 10 check

Mesa 10 is a really old driver.

src/plugins/scenes/opengl/scene_opengl.cpp

@@ -86,11 +86,6 @@ SceneOpenGL::SceneOpenGL(OpenGLBackend *backend, QObject *parent)
         init_ok = false;
         return; // error
     }
-    if (glPlatform->isMesaDriver() && glPlatform->mesaVersion() < kVersionNumber(10, 0)) {
-        qCCritical(KWIN_OPENGL) << "KWin requires at least Mesa 10.0 for OpenGL compositing.";
-        init_ok = false;
-        return;
-    }
 
     // We only support the OpenGL 2+ shader API, not GL_ARB_shader_objects
     if (!hasGLVersion(2, 0)) {