Revert "More accurate info in examples."

This reverts commit 5f9c3425.

examples/svm/plot_iris.py

@@ -4,7 +4,7 @@ Plot different SVM classifiers in the iris dataset
 ==================================================
 
 Comparison of different linear SVM classifiers on the iris dataset. It
-will plot the decision surface for four different SVM classifiers.
+will plot the decision surface and the support vectors.
 
 """