rm unused geth_fork api method

internal/ethapi/api.go

@@ -1958,25 +1958,6 @@ func (api *NetAPI) Version() string {
 	return fmt.Sprintf("%d", api.networkVersion)
 }
 
-// GethAPI offers geth-specific API methods.
-type GethAPI struct {
-	b Backend
-}
-
-// NewGethAPI creates a new net API instance.
-func NewGethAPI(b Backend) *GethAPI {
-	return &GethAPI{b: b}
-}
-
-// Fork returns the latest enabled fork as of the given block.
-func (api *GethAPI) Fork(ctx context.Context, num rpc.BlockNumber) (string, error) {
-	b, err := api.b.BlockByNumber(ctx, num)
-	if err != nil {
-		return "", fmt.Errorf("block #%d not found", num)
-	}
-	return api.b.ChainConfig().LatestFork(b.Number(), b.Time()).String(), nil
-}
-
 // checkTxFee is an internal function used to check whether the fee of
 // the given transaction is _reasonable_(under the cap).
 func checkTxFee(gasPrice *big.Int, gas uint64, cap float64) error {

internal/web3ext/web3ext.go

@@ -720,17 +720,3 @@ web3._extend({
 	],
 });
 `
-
-const GethJs = `
-web3._extend({
-	property: 'geth',
-	methods:
-	[
-		new web3._extend.Method({
-			name: 'fork',
-			call: 'geth_fork',
-			params: 1
-		}),
-	],
-});
-`