Cleanup - Lapack to tile

Keep going on with the cleanup of the flush and getoncpu.

I start by the basic function of lapack to tile and tile to lapack. The idea is to remove all workspaces from pz*.c files if possible.

In this MR:

• Remove the asynchronous interface to change the data format. People cans till do it by copy/paste the synchronous one in their own code and using the asynchronous version of zlacpy.
• Remove the pztile.c file
  • Data format converion uses zlacpy
  • ztile_to_zero is a zlaset so no need for duplicated code

compute/zgelqf.c

@@ -297,6 +297,10 @@ int MORSE_zgelqf_Tile_Async( MORSE_desc_t *A, MORSE_desc_t *T,
         morse_pzgelqfrh( A, T, Dptr, MORSE_RHBLK, sequence, request );
     }
     if (Dptr != NULL) {
+        MORSE_Desc_Flush( A, sequence );
+        MORSE_Desc_Flush( T, sequence );
+        MORSE_Desc_Flush( Dptr, sequence );
+        morse_sequence_wait( morse, sequence );
         morse_desc_mat_free( Dptr );
     }
     (void)D;