RFC: hello-world: remove reference to "name not given"

exercises/hello-world/canonical-data.json

@@ -1,23 +1,14 @@
 {
-   "#": [
-     "Language implementations vary on the issue of missing input variables.",
-     "In this set of test cases, the input variable is left out of the definition,",
-     "and the generator would need to handle the language implementation."
-   ],
    "cases": [
-      {
-         "description": "no name",
-         "expected": "Hello, World!"
-      },
       {
          "description": "sample name",
          "name": "Alice",
          "expected": "Hello, Alice!"
       },
       {
          "description": "other sample name",
-         "name": "Bob",
-         "expected": "Hello, Bob!"
+         "name": "World",
+         "expected": "Hello, World!"
       }
    ]
 }

exercises/hello-world/description.md

@@ -7,13 +7,11 @@ the traditional first program for beginning programming in a new language.
 
 ## Specification
 
-Write a `Hello World!` function that can greet someone given their name.  The
-function should return the appropriate greeting.
+Write a `Hello World!` function that can greet the world or a specific person.
+The function should return the appropriate greeting.
 
 For an input of "Alice", the response should be "Hello, Alice!".
 
-If a name is not given, the response should be "Hello, World!"
-
 ## Test-Driven Development
 
 As programmers mature, they eventually want to test their code.