intrapred test: skip some configurations

gcc 7 produces warnings for this file when there are no implementations
using the tests. This appears to be connected to the template
instantiations.

Work around this by skipping the TEST_P sections when they are not
needed.

BUG=aomedia:1313

Change-Id: I41a44a10f4949ae87cf13de5f3d3c4940e21855f

test/intrapred_test.cc

diff --git a/test/intrapred_test.cc b/test/intrapred_test.cc
index cefbb6b..3390c85 100644
--- a/test/intrapred_test.cc
+++ b/test/intrapred_test.cc
@@ -140,6 +140,9 @@
   }
 };
 
+// Suppress an unitialized warning. Once there are implementations to test then
+// this can be restored.
+#if 0
 TEST_P(HighbdIntraPredTest, Bitexact) {
   // max block size is 32
   DECLARE_ALIGNED(16, uint16_t, left_col[2 * 32]);
@@ -150,7 +153,10 @@
   memset(above_data, 0, sizeof(above_data));
   RunTest(left_col, above_data, dst, ref_dst);
 }
+#endif  // 0
 
+// Same issue as above but for arm.
+#if !HAVE_NEON
 TEST_P(LowbdIntraPredTest, Bitexact) {
   // max block size is 32
   DECLARE_ALIGNED(16, uint8_t, left_col[2 * 32]);
@@ -161,6 +167,7 @@
   memset(above_data, 0, sizeof(above_data));
   RunTest(left_col, above_data, dst, ref_dst);
 }
+#endif  // !HAVE_NEON
 
 // -----------------------------------------------------------------------------
 // High Bit Depth Tests