Remove smooth_hv experiment flag.

This experiment has been cleared by Tapas.

Also, fix a couple of hash signatures in the test while we are at it.

Change-Id: I1658bcb07913cf8bd47cfffadd729e16d5c55fc3
diff --git a/av1/common/blockd.h b/av1/common/blockd.h
index 1644057..013172f 100644
--- a/av1/common/blockd.h
+++ b/av1/common/blockd.h
@@ -102,10 +102,8 @@
     MB_MODE_COUNT,  // D207_PRED
     MB_MODE_COUNT,  // D63_PRED
     MB_MODE_COUNT,  // SMOOTH_PRED
-#if CONFIG_SMOOTH_HV
     MB_MODE_COUNT,  // SMOOTH_V_PRED
     MB_MODE_COUNT,  // SMOOTH_H_PRED
-#endif              // CONFIG_SMOOTH_HV
     MB_MODE_COUNT,  // PAETH_PRED
     MB_MODE_COUNT,  // NEARESTMV
     MB_MODE_COUNT,  // NEARMV
@@ -148,10 +146,8 @@
     MB_MODE_COUNT,  // D207_PRED
     MB_MODE_COUNT,  // D63_PRED
     MB_MODE_COUNT,  // SMOOTH_PRED
-#if CONFIG_SMOOTH_HV
     MB_MODE_COUNT,  // SMOOTH_V_PRED
     MB_MODE_COUNT,  // SMOOTH_H_PRED
-#endif              // CONFIG_SMOOTH_HV
     MB_MODE_COUNT,  // PAETH_PRED
     MB_MODE_COUNT,  // NEARESTMV
     MB_MODE_COUNT,  // NEARMV
@@ -422,20 +418,18 @@
 #if CONFIG_CFL
 static INLINE PREDICTION_MODE get_uv_mode(UV_PREDICTION_MODE mode) {
   static const PREDICTION_MODE uv2y[UV_INTRA_MODES] = {
-    DC_PRED,      // UV_DC_PRED
-    V_PRED,       // UV_V_PRED
-    H_PRED,       // UV_H_PRED
-    D45_PRED,     // UV_D45_PRED
-    D135_PRED,    // UV_D135_PRED
-    D117_PRED,    // UV_D117_PRED
-    D153_PRED,    // UV_D153_PRED
-    D207_PRED,    // UV_D207_PRED
-    D63_PRED,     // UV_D63_PRED
-    SMOOTH_PRED,  // UV_SMOOTH_PRED
-#if CONFIG_SMOOTH_HV
+    DC_PRED,        // UV_DC_PRED
+    V_PRED,         // UV_V_PRED
+    H_PRED,         // UV_H_PRED
+    D45_PRED,       // UV_D45_PRED
+    D135_PRED,      // UV_D135_PRED
+    D117_PRED,      // UV_D117_PRED
+    D153_PRED,      // UV_D153_PRED
+    D207_PRED,      // UV_D207_PRED
+    D63_PRED,       // UV_D63_PRED
+    SMOOTH_PRED,    // UV_SMOOTH_PRED
     SMOOTH_V_PRED,  // UV_SMOOTH_V_PRED
     SMOOTH_H_PRED,  // UV_SMOOTH_H_PRED
-#endif              // CONFIG_SMOOTH_HV
     PAETH_PRED,     // UV_PAETH_PRED
     DC_PRED,        // CFL_PRED
   };
@@ -785,10 +779,8 @@
   DCT_ADST,   // D207
   ADST_DCT,   // D63
   ADST_ADST,  // SMOOTH
-#if CONFIG_SMOOTH_HV
   ADST_DCT,   // SMOOTH_V
   DCT_ADST,   // SMOOTH_H
-#endif        // CONFIG_SMOOTH_HV
   ADST_ADST,  // PAETH
 };
 
@@ -1069,10 +1061,7 @@
 #if CONFIG_EXT_INTRA
 extern const int16_t dr_intra_derivative[90];
 static const uint8_t mode_to_angle_map[] = {
-  0, 90, 180, 45, 135, 113, 157, 203, 67, 0, 0,
-#if CONFIG_SMOOTH_HV
-  0, 0,
-#endif  // CONFIG_SMOOTH_HV
+  0, 90, 180, 45, 135, 113, 157, 203, 67, 0, 0, 0, 0,
 };
 #endif  // CONFIG_EXT_INTRA