Remove duplicate code in #if branch

Since 3ab240503e, contents in #if #else branch are identical.

Change-Id: I763ea765f5b2a69625894a5c611db2c1987e4ccb

av1/encoder/encodeframe.c

diff --git a/av1/encoder/encodeframe.c b/av1/encoder/encodeframe.c
index bf0028d..35cfafc 100644
--- a/av1/encoder/encodeframe.c
+++ b/av1/encoder/encodeframe.c
@@ -1536,13 +1536,8 @@
                          int supertx_enabled
 #endif
                          ) {
-#if CONFIG_DELTA_Q
   MACROBLOCK *x = &td->mb;
   MACROBLOCKD *const xd = &x->e_mbd;
-#else
-  MACROBLOCK *x = &td->mb;
-  MACROBLOCKD *const xd = &x->e_mbd;
-#endif
   const MODE_INFO *const mi = xd->mi[0];
   const MB_MODE_INFO *const mbmi = &mi->mbmi;
   const MB_MODE_INFO_EXT *const mbmi_ext = x->mbmi_ext;