ShellPkg/UefiShellDebug1CommandsLib: 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/UefiShellDebug1CommandsLib/UefiShellDebug1CommandsLib.h

@@ -72,7 +72,6 @@ extern        EFI_HANDLE                        gShellDebug1HiiHandle;
   @retval EFI_NOT_FOUND    A configuration table matching TableGuid was not found.
 **/
 EFI_STATUS
-EFIAPI
 GetSystemConfigurationTable (
   IN EFI_GUID *TableGuid,
   IN OUT VOID **Table
@@ -85,7 +84,6 @@ GetSystemConfigurationTable (
   @param[in, out] Guid     The pointer to the buffer to get the GUID value.
 **/
 EFI_STATUS
-EFIAPI
 ConvertStringToGuid (
   IN CONST CHAR16 *StringGuid,
   IN OUT EFI_GUID *Guid
@@ -105,7 +103,6 @@ ConvertStringToGuid (
 
 **/
 UINTN
-EFIAPI
 HexCharToUintn (
   IN      CHAR16                    Char
   );
@@ -352,7 +349,6 @@ ShellCommandRunHexEdit (
   @param[in] LastRow            The last printable row.
 **/
 VOID
-EFIAPI
 EditorClearLine (
   IN UINTN Row,
   IN UINTN LastCol,
@@ -368,7 +364,6 @@ EditorClearLine (
   @retval FALSE     The filename is not ok.
 **/
 BOOLEAN
-EFIAPI
 IsValidFileName (
   IN CONST CHAR16 *Name
   );
@@ -382,7 +377,6 @@ IsValidFileName (
   @return the valid filename.
 **/
 CHAR16 *
-EFIAPI
 EditGetDefaultFileName (
   IN CONST CHAR16 *Extension
   );
@@ -410,7 +404,6 @@ EditGetDefaultFileName (
   @retval EFI_INVALID_PARAMETER FileName was a directory.
 **/
 EFI_STATUS
-EFIAPI
 ReadFileIntoBuffer (
   IN CONST CHAR16 *FileName,
   OUT VOID        **Buffer,