Remove redundant functions in ledger-keyring.ts

Author: dawnseeker8

packages/keyring-eth-ledger-bridge/jest.config.js

@@ -23,10 +23,10 @@ module.exports = merge(baseConfig, {
   // An object that configures minimum threshold enforcement for coverage results
   coverageThreshold: {
     global: {
-      branches: 91.89,
+      branches: 92.77,
       functions: 97.87,
-      lines: 97.16,
-      statements: 97.19,
+      lines: 97.28,
+      statements: 97.31,
     },
   },
 });

packages/keyring-eth-ledger-bridge/src/ledger-keyring.ts

@@ -95,17 +95,6 @@ export class LedgerKeyring implements Keyring {
 
   deviceId = '';
 
-  static #isLedgerError(
-    error: unknown,
-  ): error is { errorCode: string; message: string } {
-    return (
-      typeof error === 'object' &&
-      error !== null &&
-      'errorCode' in error &&
-      'message' in error
-    );
-  }
-
   readonly type: string = keyringType;
 
   page = 0;