ShellPkg/UefiShellDriver1CommandsLib: Remove unnecessary EFIAPI

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chen A Chen <chen.a.chen@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Ruiyu Ni <Ruiyu.ni@intel.com>

ShellPkg/Library/UefiShellDriver1CommandsLib/DrvCfg.c

@@ -30,7 +30,6 @@ STATIC CONST EFI_GUID *CfgGuidList[] = {&gEfiDriverConfigurationProtocolGuid, &g
   @retval EFI_NOT_FOUND   There was no EFI_HII_HANDLE found for that deviec path.
 **/
 EFI_STATUS
-EFIAPI
 FindHiiHandleViaDevPath(
   IN CONST EFI_DEVICE_PATH_PROTOCOL *DevPath1,
   OUT EFI_HII_HANDLE                *HiiHandle,
@@ -124,7 +123,6 @@ FindHiiHandleViaDevPath(
   @retval EFI_SUCCESS   The operation was successful.
 **/
 EFI_STATUS
-EFIAPI
 ConvertHandleToHiiHandle(
   IN CONST EFI_HANDLE           Handle,
   OUT EFI_HII_HANDLE            *HiiHandle,
@@ -159,7 +157,6 @@ ConvertHandleToHiiHandle(
   @param[in] FileName         The filename to rwite the info to.
 **/
 SHELL_STATUS
-EFIAPI
 ConfigToFile(
   IN CONST EFI_HANDLE     Handle,
   IN CONST CHAR16         *FileName
@@ -269,7 +266,6 @@ ConfigToFile(
   @param[in] FileName         The filename to read the info from.
 **/
 SHELL_STATUS
-EFIAPI
 ConfigFromFile(
   IN       EFI_HANDLE     Handle,
   IN CONST CHAR16         *FileName
@@ -486,7 +482,6 @@ ConfigFromFile(
   @retval SHELL_INVALID_PARAMETER   A parameter has a invalid value.
 **/
 EFI_STATUS
-EFIAPI
 ShellCmdDriverConfigurationProcessActionRequired (
   EFI_HANDLE                                DriverImageHandle,
   EFI_HANDLE                                ControllerHandle,
@@ -554,7 +549,6 @@ ShellCmdDriverConfigurationProcessActionRequired (
   @retval SHELL_INVALID_PARAMETER   A parameter has a invalid value.
 **/
 SHELL_STATUS
-EFIAPI
 PreHiiDrvCfg (
   IN CONST CHAR8    *Language,
   IN BOOLEAN        ForceDefaults,
@@ -1062,7 +1056,6 @@ Done:
   @retval SHELL_SUCCESS     The operation was successful.
 **/
 SHELL_STATUS
-EFIAPI
 PrintConfigInfoOnAll(
   IN CONST BOOLEAN ChildrenToo,
   IN CONST CHAR8   *Language,