discr1.ads: Compile with -gnatc instead of -gnatct.

	* gnat.dg/specs/discr1.ads: Compile with -gnatc instead of -gnatct.
	* gnat.dg/specs/limited_with4.ads: Likewise.
	* gnat.dg/specs/limited_with4_pkg.ads: Likewise.
	* gnat.dg/specs/private1-sub.ads: Likewise.
	* gnat.dg/specs/task1.ads: Likewise.

From-SVN: r279889

gcc/testsuite/gnat.dg/specs/discr1.ads

 -- { dg-do compile }
--- { dg-options "-gnatct" }
+-- { dg-options "-gnatc" }
 
 with Discr1_Pkg; use Discr1_Pkg;
 

gcc/testsuite/gnat.dg/specs/limited_with4.ads

 -- { dg-do compile }
--- { dg-options "-gnat12 -gnatct" }
+-- { dg-options "-gnatc" }
 
 with Ada.Containers.Vectors;
 with Limited_With4_Pkg;

gcc/testsuite/gnat.dg/specs/limited_with4_pkg.ads

 -- { dg-do compile }
--- { dg-options "-gnat12 -gnatct" }
+-- { dg-options "-gnatc" }
 
 limited with Limited_With4;
 

gcc/testsuite/gnat.dg/specs/private1-sub.ads

 -- { dg-do compile }
--- { dg-options "-gnatct" }
+-- { dg-options "-gnatc" }
 
 package Private1.Sub is
 

gcc/testsuite/gnat.dg/specs/task1.ads

 -- { dg-do compile }
--- { dg-options "-gnatct" }
+-- { dg-options "-gnatc" }
 
 package Task1 is