remove unnecessary try statments

app/scripts/keyring-controller.js

@@ -318,18 +318,12 @@ module.exports = class KeyringController extends EventEmitter {
   // TX Manager to update the state after signing
 
   signTransaction (ethTx, selectedAddress, txId) {
-    return new Promise((resolve, reject) => {
-      try {
     const address = normalize(selectedAddress)
     return this.getKeyringForAccount(address)
     .then((keyring) => {
       return keyring.signTransaction(address, ethTx)
     }).then((tx) => {
-          resolve({tx, txId})
-        })
-      } catch (e) {
-        reject(e)
-      }
+      return {tx, txId}
     })
   }
   // Add Unconfirmed Message

app/scripts/metamask-controller.js

@@ -165,7 +165,6 @@ module.exports = class MetamaskController {
   sendUpdate () {
     this.getState()
     .then((state) => {
-
       this.listeners.forEach((remote) => {
         remote.sendUpdate(state)
       })

app/scripts/transaction-manager.js

@@ -138,8 +138,6 @@ module.exports = class TransactionManager extends EventEmitter {
 
   // formats txParams so the keyringController can sign it
   formatTxForSigining (txParams) {
-    return new Promise((resolve, reject) => {
-      try {
     var address = txParams.from
     var metaTx = this.getTx(txParams.metamaskId)
     var gasMultiplier = metaTx.gasMultiplier
@@ -156,11 +154,7 @@ module.exports = class TransactionManager extends EventEmitter {
     txParams.nonce = normalize(txParams.nonce)
     const ethTx = new Transaction(txParams)
     var txId = txParams.metamaskId
-        resolve({ethTx, address, txId})
-      } catch (err) {
-        reject(err)
-      }
-    })
+    return Promise.resolve({ethTx, address, txId})
   }
 
   // receives a signed tx object and updates the tx hash