Remove challanges

Since they are partly broken because the challenge description itself points to not existing internet resources.

src/Dice/DieHandleTest.class.st

@@ -51,7 +51,7 @@ DieHandleTest >> testRoll [
 { #category : #tests }
 DieHandleTest >> testSimpleHandle [
 
-	self assert: 2 D20 diceNumber equals: 2
+	self assert: 2 D20 equals: 2
 ]
 
 { #category : #tests }

src/MyCounter/Challenge0.class.st

@@ -1,19 +0,0 @@
-Class {
-	#name : #Challenge0,
-	#superclass : #Object,
-	#instVars : [
-		'response'
-	],
-	#category : #MyCounter
-}
-
-{ #category : #actions }
-Challenge0 >> fetch [
-
-	response := ZnEasy getPng: 'http://pharo.org/files/pharo.png'.
-]
-
-{ #category : #actions }
-Challenge0 >> open [
-	response asMorph openInWorld
-]

src/MyCounter/Challenge1.class.st

@@ -1,22 +0,0 @@
-Class {
-	#name : #Challenge1,
-	#superclass : #Object,
-	#instVars : [
-		'response'
-	],
-	#category : #MyCounter
-}
-
-{ #category : #actions }
-Challenge1 >> fetch [
-	|email url asHex|
-	email := MD5 new hashMessage: 'belka@caraus.de'.
-	asHex := email hex asString.
-	url := 'http://www.gravatar.com/avatar/', asHex, '.jpg'.
-	response := ZnEasy getJpeg: url
-]
-
-{ #category : #actions }
-Challenge1 >> open [
-	response asMorph openInHand
-]