manual tweaking

Author: martinbonnin

spec/Appendix C -- Built-in Definitions.md

@@ -126,7 +126,6 @@ type __Type {
   enumValues(includeDeprecated: Boolean = false): [__EnumValue!]
   inputFields(includeDeprecated: Boolean = false): [__InputValue!]
   ofType: __Type
-  isOneOf: Boolean
 }
 
 """
@@ -269,11 +268,6 @@ enum __DirectiveLocation {
   """
   VARIABLE_DEFINITION
 
-  """
-  Location adjacent to a fragment variable definition.
-  """
-  FRAGMENT_VARIABLE_DEFINITION
-
   """
   Location adjacent to a schema definition.
   """