1 files changed, 0 insertions, 105 deletions
diff --git a/tools/go_generics/remove.go b/tools/go_generics/remove.go
deleted file mode 100644
index 568a6bbd3..000000000
--- a/tools/go_generics/remove.go
+++ /dev/null
@@ -1,105 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package main
-
-import (
-	"go/ast"
-	"go/token"
-)
-
-type typeSet map[string]struct{}
-
-// isTypeOrPointerToType determines if the given AST expression represents a
-// type or a pointer to a type that exists in the provided type set.
-func isTypeOrPointerToType(set typeSet, expr ast.Expr, starCount int) bool {
-	switch e := expr.(type) {
-	case *ast.Ident:
-		_, ok := set[e.Name]
-		return ok
-	case *ast.StarExpr:
-		if starCount > 1 {
-			return false
-		}
-		return isTypeOrPointerToType(set, e.X, starCount+1)
-	case *ast.ParenExpr:
-		return isTypeOrPointerToType(set, e.X, starCount)
-	default:
-		return false
-	}
-}
-
-// isMethodOf determines if the given function declaration is a method of one
-// of the types in the provided type set. To do that, it checks if the function
-// has a receiver and that its type is either T or *T, where T is a type that
-// exists in the set. This is per the spec:
-//
-// That parameter section must declare a single parameter, the receiver. Its
-// type must be of the form T or *T (possibly using parentheses) where T is a
-// type name. The type denoted by T is called the receiver base type; it must
-// not be a pointer or interface type and it must be declared in the same
-// package as the method.
-func isMethodOf(set typeSet, f *ast.FuncDecl) bool {
-	// If the function doesn't have exactly one receiver, then it's
-	// definitely not a method.
-	if f.Recv == nil || len(f.Recv.List) != 1 {
-		return false
-	}
-
-	return isTypeOrPointerToType(set, f.Recv.List[0].Type, 0)
-}
-
-// removeTypeDefinitions removes the definition of all types contained in the
-// provided type set.
-func removeTypeDefinitions(set typeSet, d *ast.GenDecl) {
-	if d.Tok != token.TYPE {
-		return
-	}
-
-	i := 0
-	for _, gs := range d.Specs {
-		s := gs.(*ast.TypeSpec)
-		if _, ok := set[s.Name.Name]; !ok {
-			d.Specs[i] = gs
-			i++
-		}
-	}
-
-	d.Specs = d.Specs[:i]
-}
-
-// removeTypes removes from the AST the definition of all types and their
-// method sets that are contained in the provided type set.
-func removeTypes(set typeSet, f *ast.File) {
-	// Go through the top-level declarations.
-	i := 0
-	for _, decl := range f.Decls {
-		keep := true
-		switch d := decl.(type) {
-		case *ast.GenDecl:
-			countBefore := len(d.Specs)
-			removeTypeDefinitions(set, d)
-			keep = countBefore == 0 || len(d.Specs) > 0
-		case *ast.FuncDecl:
-			keep = !isMethodOf(set, d)
-		}
-
-		if keep {
-			f.Decls[i] = decl
-			i++
-		}
-	}
-
-	f.Decls = f.Decls[:i]
-}