Remove 4x rec from sad4d_sse2

37K binary size reduction.

Bug: aomedia:2865

Change-Id: I0331d71f94f94e07d16877c8b5fd70615f74927f

aom_dsp/x86/sad4d_sse2.asm

diff --git a/aom_dsp/x86/sad4d_sse2.asm b/aom_dsp/x86/sad4d_sse2.asm
index b5a17c5..343a14d 100644
--- a/aom_dsp/x86/sad4d_sse2.asm
+++ b/aom_dsp/x86/sad4d_sse2.asm
@@ -426,12 +426,14 @@
 SADNXN4D   8,   4
 SADNXN4D   4,   8
 SADNXN4D   4,   4
+%if CONFIG_REALTIME_ONLY==0
 SADNXN4D   4,  16
 SADNXN4D  16,   4
 SADNXN4D   8,  32
 SADNXN4D  32,   8
 SADNXN4D  16,  64
 SADNXN4D  64,  16
+%endif
 SADNXN4D 128, 128, 1
 SADNXN4D 128,  64, 1
 SADNXN4D  64, 128, 1
@@ -448,12 +450,14 @@
 SADNXN4D   8,   4, 1
 SADNXN4D   4,   8, 1
 SADNXN4D   4,   4, 1
+%if CONFIG_REALTIME_ONLY==0
 SADNXN4D   4,  16, 1
 SADNXN4D  16,   4, 1
 SADNXN4D   8,  32, 1
 SADNXN4D  32,   8, 1
 SADNXN4D  16,  64, 1
 SADNXN4D  64,  16, 1
+%endif
 SADNXN4D 128, 128, 0, 1
 SADNXN4D 128,  64, 0, 1
 SADNXN4D  64, 128, 0, 1
@@ -468,11 +472,13 @@
 SADNXN4D   8,  16, 0, 1
 SADNXN4D   8,   8, 0, 1
 SADNXN4D   4,   8, 0, 1
+%if CONFIG_REALTIME_ONLY==0
 SADNXN4D   4,  16, 0, 1
 SADNXN4D   8,  32, 0, 1
 SADNXN4D  32,   8, 0, 1
 SADNXN4D  16,  64, 0, 1
 SADNXN4D  64,  16, 0, 1
+%endif
 
 ; Different assembly is needed when the height gets subsampled to 2
 ; SADNXN4D 16,  4, 0, 1