remove default environment

Exercise-Configuration.md

@@ -72,7 +72,7 @@ Represents basic exercise configuration which connects all things together. For
 
 ### Frontend Format
 
-Returned as JSON. There is one generated "environment" which is called "default" in here default pipelines for all tests can be found.
+Returned as JSON.
 
 Mandatory items are bold, optional italic, description of items follows:
 
@@ -91,41 +91,6 @@ Example:
 
 ```
 [
-  {
-    "name":"default",
-    "tests":[
-      {
-        "name":"Test 1",
-        "pipelines":[
-          {
-            "name":"pipeline1",
-            "variables":[
-              {
-                "name":"varA",
-                "type":"string",
-                "value":"valA"
-              }
-            ]
-          }
-        ]
-      },
-      {
-        "name":"Test 2",
-        "pipelines":[
-          {
-            "name":"pipeline2",
-            "variables":[
-              {
-                "name":"varB",
-                "type":"file",
-                "value":"valB"
-              }
-            ]
-          }
-        ]
-      }
-    ]
-  },
   {
     "name":"java8",
     "tests":[