Revert "Add support for generic function type syntax, part 1" (TBR)

pkg/analyzer/lib/dart/ast/visitor.dart

Index: pkg/analyzer/lib/dart/ast/visitor.dart
diff --git a/pkg/analyzer/lib/dart/ast/visitor.dart b/pkg/analyzer/lib/dart/ast/visitor.dart
index 79f3bfbed1389d3bdd940b92b4455552c8b57f03..d7781a4fb6f3d0186866d87baffbb164458e029d 100644
--- a/pkg/analyzer/lib/dart/ast/visitor.dart
+++ b/pkg/analyzer/lib/dart/ast/visitor.dart
@@ -336,13 +336,6 @@ class GeneralizingAstVisitor<R> implements AstVisitor<R> {
       visitNormalFormalParameter(node);
 
   @override
-  R visitGenericFunctionType(GenericFunctionType node) =>
-      visitTypeAnnotation(node);
-
-  @override
-  R visitGenericTypeAlias(GenericTypeAlias node) => visitTypeAlias(node);
-
-  @override
   R visitHideCombinator(HideCombinator node) => visitCombinator(node);
 
   R visitIdentifier(Identifier node) => visitExpression(node);
@@ -535,8 +528,6 @@ class GeneralizingAstVisitor<R> implements AstVisitor<R> {
 
   R visitTypeAlias(TypeAlias node) => visitNamedCompilationUnitMember(node);
 
-  R visitTypeAnnotation(TypeAnnotation node) => visitNode(node);
-
   @override
   R visitTypeArgumentList(TypeArgumentList node) => visitNode(node);
 
@@ -889,18 +880,6 @@ class RecursiveAstVisitor<R> implements AstVisitor<R> {
   }
 
   @override
-  R visitGenericFunctionType(GenericFunctionType node) {
-    node.visitChildren(this);
-    return null;
-  }
-
-  @override
-  R visitGenericTypeAlias(GenericTypeAlias node) {
-    node.visitChildren(this);
-    return null;
-  }
-
-  @override
   R visitHideCombinator(HideCombinator node) {
     node.visitChildren(this);
     return null;
@@ -1419,12 +1398,6 @@ class SimpleAstVisitor<R> implements AstVisitor<R> {
       null;
 
   @override
-  R visitGenericFunctionType(GenericFunctionType node) => null;
-
-  @override
-  R visitGenericTypeAlias(GenericTypeAlias node) => null;
-
-  @override
   R visitHideCombinator(HideCombinator node) => null;
 
   @override
@@ -1770,12 +1743,6 @@ class ThrowingAstVisitor<R> implements AstVisitor<R> {
       _throw(node);
 
   @override
-  R visitGenericFunctionType(GenericFunctionType node) => _throw(node);
-
-  @override
-  R visitGenericTypeAlias(GenericTypeAlias node) => _throw(node);
-
-  @override
   R visitHideCombinator(HideCombinator node) => _throw(node);
 
   @override
@@ -1954,6 +1921,7 @@ class ThrowingAstVisitor<R> implements AstVisitor<R> {
 
   @override
   R visitWithClause(WithClause node) => _throw(node);
+
   @override
   R visitYieldStatement(YieldStatement node) => _throw(node);
 
@@ -2386,22 +2354,6 @@ class TimedAstVisitor<T> implements AstVisitor<T> {
   }
 
   @override
-  T visitGenericFunctionType(GenericFunctionType node) {
-    stopwatch.start();
-    T result = _baseVisitor.visitGenericFunctionType(node);
-    stopwatch.stop();
-    return result;
-  }
-
-  @override
-  T visitGenericTypeAlias(GenericTypeAlias node) {
-    stopwatch.start();
-    T result = _baseVisitor.visitGenericTypeAlias(node);
-    stopwatch.stop();
-    return result;
-  }
-
-  @override
   T visitHideCombinator(HideCombinator node) {
     stopwatch.start();
     T result = _baseVisitor.visitHideCombinator(node);
@@ -3044,12 +2996,6 @@ class UnifyingAstVisitor<R> implements AstVisitor<R> {
       visitNode(node);
 
   @override
-  R visitGenericFunctionType(GenericFunctionType node) => visitNode(node);
-
-  @override
-  R visitGenericTypeAlias(GenericTypeAlias node) => visitNode(node);
-
-  @override
   R visitHideCombinator(HideCombinator node) => visitNode(node);
 
   @override