Fixed few error and removed unused code.

contracts/InstaRegistry.sol

@@ -92,6 +92,7 @@ contract LogicRegistry is AddressRegistry {
 
 }
 
+
 /**
  * @dev Deploys a new proxy instance and sets msg.sender as owner of proxy
  */
@@ -134,6 +135,7 @@ contract WalletRegistry is LogicRegistry {
 
 }
 
+
 /// @title InstaRegistry
 /// @dev Initializing Registry
 contract InstaRegistry is WalletRegistry {

contracts/UserWallet.sol

@@ -1,7 +1,5 @@
 pragma solidity ^0.5.2;
 
-import "openzeppelin-solidity/contracts/math/SafeMath.sol";
-
 /**
  * @title RegistryInterface Interface 
  */
@@ -10,6 +8,7 @@ interface RegistryInterface {
     function record(address currentOwner, address nextOwner) external;
 }
 
+
 /**
  * @title Address Registry Record
  */
@@ -37,8 +36,6 @@ contract AddressRecord {
  * @title User Auth
  */
 contract UserAuth is AddressRecord {
-    using SafeMath for uint;
-    using SafeMath for uint256;
 
     event LogSetOwner(address indexed owner);
     address public owner;