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/zgeadd.c

@@ -164,10 +164,10 @@ int MORSE_zgeadd(MORSE_enum trans, int M, int N,
         trans, alpha, &descA, beta, &descB, sequence, &request);
 
     /* Submit the matrix conversion */
-        morse_zooptile2lap( descB, B, NB, NB, LDB, N,  sequence, &request);
-        morse_sequence_wait(morse, sequence);
-        morse_desc_mat_free(&descA);
-        morse_desc_mat_free(&descB);
+    morse_zooptile2lap( descB, B, NB, NB, LDB, N,  sequence, &request);
+    morse_sequence_wait(morse, sequence);
+    morse_desc_mat_free(&descA);
+    morse_desc_mat_free(&descB);
 
     status = sequence->status;
     morse_sequence_destroy(morse, sequence);