Remove layer from examples

The new gradio version lets us not specify the layer input. This also
removes the example that is now duplicate because only the layer was
different.

examples.csv

@@ -1,7 +1,6 @@
-sentence,layer
-"This movie was the best movie I have ever seen! some scenes were ridiculous, but acting was great",8
-"I really didn't like this movie. Some of the actors were good, but overall the movie was boring",8
-"If the acting had been better, this movie might have been pretty good.",8
-"If he had hated it, he would not have said that he loved it.",8
-"If he had hated it, he would not have said that he loved it.",2
-"Attribution methods are very interesting, but unfortunately do not work reliably out of the box.",8
+sentence
+"This movie was the best movie I have ever seen! some scenes were ridiculous, but acting was great"
+"I really didn't like this movie. Some of the actors were good, but overall the movie was boring"
+"If the acting had been better, this movie might have been pretty good."
+"If he had hated it, he would not have said that he loved it."
+"Attribution methods are very interesting, but unfortunately do not work reliably out of the box."