fix duplicate tests for AVX-NE-CONVERT in convert.txt (fixes #274)

test/dataset/convert.txt

diff --git a/test/dataset/convert.txt b/test/dataset/convert.txt
index 0108821..a6bea00 100644
--- a/test/dataset/convert.txt
+++ b/test/dataset/convert.txt
@@ -177,9 +177,9 @@
 
 // AVX-NE-CONVERT
 vbcstnebf162ps(xmm15, ptr[rax+64]);
-vbcstnebf162ps(xmm15, ptr[rax+64]);
+vbcstnebf162ps(ymm15, ptr[rax+64]);
 
-vbcstnesh2ps(ymm15, ptr[rax+64]);
+vbcstnesh2ps(xmm15, ptr[rax+64]);
 vbcstnesh2ps(ymm15, ptr[rax+64]);
 
 vcvtneebf162ps(xmm15, ptr[rax+64]);