Fix warning: use clause for package has no effect

With gcc 8.1 the following message appears:
  warning: use clause for package "*" has no effect
  gnatmake: "*.adb" compilation error
This patch fixes it.

3 files changed, 1 insertions, 9 deletions

diff --git a/src/ghdldrv/ghdldrv.adb b/src/ghdldrv/ghdldrv.adb
index 96e259da7..b68c46850 100644
--- a/src/ghdldrv/ghdldrv.adb
+++ b/src/ghdldrv/ghdldrv.adb
@@ -1432,8 +1432,6 @@ package body Ghdldrv is
 
    function Missing_Object_File (Design_File : Iir_Design_File) return Boolean
    is
-      use Files_Map;
-
       Name : constant Name_Id := Get_Design_File_Filename (Design_File);
       Obj_Pathname : constant String := Get_Object_Filename (Design_File);
       Stamp : OS_Time;
diff --git a/src/ghdldrv/ghdllocal.adb b/src/ghdldrv/ghdllocal.adb
index 8cbfa70eb..fbc27087e 100644
--- a/src/ghdldrv/ghdllocal.adb
+++ b/src/ghdldrv/ghdllocal.adb
@@ -16,7 +16,7 @@
 --  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 --  02111-1307, USA.
 with Ada.Text_IO; use Ada.Text_IO;
-with Ada.Command_Line; use Ada.Command_Line;
+with Ada.Command_Line;
 with GNAT.Directory_Operations;
 with Types; use Types;
 with Libraries;
@@ -1506,8 +1506,6 @@ package body Ghdllocal is
    --  Convert NAME to lower cases, unless it is an extended identifier.
    function Convert_Name (Name : String_Access) return String_Access
    is
-      use Name_Table;
-
       function Is_Bad_Unit_Name return Boolean is
       begin
          if Name'Length = 0 then
diff --git a/src/ghdldrv/ghdlprint.adb b/src/ghdldrv/ghdlprint.adb
index 5f13e39c3..f95e266ee 100644
--- a/src/ghdldrv/ghdlprint.adb
+++ b/src/ghdldrv/ghdlprint.adb
@@ -1183,10 +1183,6 @@ package body Ghdlprint is
                              Files : Argument_List)
    is
       pragma Unreferenced (Cmd);
-      use Scanner;
-      use Tokens;
-      use Files_Map;
-      use Ada.Characters.Latin_1;
 
       Id : Name_Id;
       Fe : Source_File_Entry;