Revert "accounts/abi: add ErrorById (ethereum#27277)"

This reverts commit c6b8a40.

accounts/abi/abi.go

@@ -222,17 +222,6 @@ func (abi *ABI) EventByID(topic common.Hash) (*Event, error) {
 	return nil, fmt.Errorf("no event with id: %#x", topic.Hex())
 }
 
-// ErrorByID looks up an error by the 4-byte id,
-// returns nil if none found.
-func (abi *ABI) ErrorByID(sigdata [4]byte) (*Error, error) {
-	for _, errABI := range abi.Errors {
-		if bytes.Equal(errABI.ID[:4], sigdata[:]) {
-			return &errABI, nil
-		}
-	}
-	return nil, fmt.Errorf("no error with id: %#x", sigdata[:])
-}
-
 // HasFallback returns an indicator whether a fallback function is included.
 func (abi *ABI) HasFallback() bool {
 	return abi.Fallback.Type == Fallback

accounts/abi/abi_test.go

@@ -1057,34 +1057,6 @@ func TestABI_EventById(t *testing.T) {
 	}
 }
 
-func TestABI_ErrorByID(t *testing.T) {
-	abi, err := JSON(strings.NewReader(`[
-		{"inputs":[{"internalType":"uint256","name":"x","type":"uint256"}],"name":"MyError1","type":"error"},
-		{"inputs":[{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"string","name":"b","type":"string"},{"internalType":"address","name":"c","type":"address"}],"internalType":"struct MyError.MyStruct","name":"x","type":"tuple"},{"internalType":"address","name":"y","type":"address"},{"components":[{"internalType":"uint256","name":"a","type":"uint256"},{"internalType":"string","name":"b","type":"string"},{"internalType":"address","name":"c","type":"address"}],"internalType":"struct MyError.MyStruct","name":"z","type":"tuple"}],"name":"MyError2","type":"error"},
-		{"inputs":[{"internalType":"uint256[]","name":"x","type":"uint256[]"}],"name":"MyError3","type":"error"}
-	]`))
-	if err != nil {
-		t.Fatal(err)
-	}
-	for name, m := range abi.Errors {
-		a := fmt.Sprintf("%v", &m)
-		var id [4]byte
-		copy(id[:], m.ID[:4])
-		m2, err := abi.ErrorByID(id)
-		if err != nil {
-			t.Fatalf("Failed to look up ABI error: %v", err)
-		}
-		b := fmt.Sprintf("%v", m2)
-		if a != b {
-			t.Errorf("Error %v (id %x) not 'findable' by id in ABI", name, id)
-		}
-	}
-	// test unsuccessful lookups
-	if _, err = abi.ErrorByID([4]byte{}); err == nil {
-		t.Error("Expected error: no error with this id")
-	}
-}
-
 // TestDoubleDuplicateMethodNames checks that if transfer0 already exists, there won't be a name
 // conflict and that the second transfer method will be renamed transfer1.
 func TestDoubleDuplicateMethodNames(t *testing.T) {

accounts/abi/error.go

@@ -78,7 +78,7 @@ func NewError(name string, inputs Arguments) Error {
 	}
 }
 
-func (e Error) String() string {
+func (e *Error) String() string {
 	return e.str
 }