remove unused variables from new avx2 xopy routine

kernel/x86_64/dgemm_ncopy_8_skylakex.c

@@ -52,18 +52,18 @@ int CNAME(BLASLONG m, BLASLONG n, FLOAT * __restrict a, BLASLONG lda, FLOAT * __
   FLOAT ctemp05, ctemp06, ctemp07, ctemp08;
   FLOAT ctemp09, ctemp10, ctemp11, ctemp12;
   FLOAT ctemp13, ctemp14, ctemp15, ctemp16;
-  FLOAT ctemp17, ctemp18, ctemp19, ctemp20;
-  FLOAT ctemp21, ctemp22, ctemp23, ctemp24;
-  FLOAT ctemp25, ctemp26, ctemp27, ctemp28;
-  FLOAT ctemp29, ctemp30, ctemp31, ctemp32;
-  FLOAT ctemp33, ctemp34, ctemp35, ctemp36;
-  FLOAT ctemp37, ctemp38, ctemp39, ctemp40;
-  FLOAT ctemp41, ctemp42, ctemp43, ctemp44;
-  FLOAT ctemp45, ctemp46, ctemp47, ctemp48;
-  FLOAT ctemp49, ctemp50, ctemp51, ctemp52;
-  FLOAT ctemp53, ctemp54, ctemp55, ctemp56;
-  FLOAT ctemp57, ctemp58, ctemp59, ctemp60;
-  FLOAT ctemp61, ctemp62, ctemp63, ctemp64;
+  FLOAT ctemp17; // ctemp18, ctemp19, ctemp20
+  FLOAT ctemp23, ctemp24; // ctemp21, ctemp22
+  FLOAT ctemp25; // ctemp26, ctemp27, ctemp28
+  FLOAT ctemp31, ctemp32; // ctemp29, ctemp30
+  FLOAT ctemp33; // ctemp34, ctemp35, ctemp36
+  FLOAT ctemp39, ctemp40; // ctemp37, ctemp38
+  FLOAT ctemp41; // ctemp42, ctemp43, ctemp44
+  FLOAT ctemp47, ctemp48; // ctemp45, ctemp46
+  FLOAT ctemp49; // ctemp50, ctemp51, ctemp52
+  FLOAT ctemp55, ctemp56; // ctemp53, ctemp54
+  FLOAT ctemp57; // ctemp58, ctemp59, ctemp60
+  FLOAT ctemp63, ctemp64; // ctemp61, ctemp62
 
 
   aoffset = a;