Remove "dummy" from test and tools

Change-Id: I5a237ee9225fd1c8f758498d72658ffbf1a90a61
diff --git a/tools/generate_simulator_traces.py b/tools/generate_simulator_traces.py
index f0c43b3..3e25b0d 100755
--- a/tools/generate_simulator_traces.py
+++ b/tools/generate_simulator_traces.py
@@ -77,7 +77,7 @@
 #include <stdint.h>
 }
 
-// To add a new simulator test to test-simulator-aarch64.cc, add dummy array(s)
+// To add a new simulator test to test-simulator-aarch64.cc, add placeholder array(s)
 // below to build test-simulator-aarch64 for reference platform. Then, run
 // tools/generate_simulator_traces.py on a reference platform to regenerate this
 // file and traces files.
@@ -85,11 +85,11 @@
 // ---------------------------------------------------------------------
 // ADD DUMMY ARRAYS FOR NEW SIMULATOR TEST HERE.
 // ---------------------------------------------------------------------
-const uint64_t kExpected_dummy_64[] = {0};
-const size_t kExpectedCount_dummy_64 = 0;
+const uint64_t kExpected_placeholder_64[] = {0};
+const size_t kExpectedCount_placeholder_64 = 0;
 
-const uint32_t kExpected_dummy_32[] = {0};
-const size_t kExpectedCount_dummy_32 = 0;
+const uint32_t kExpected_placeholder_32[] = {0};
+const size_t kExpectedCount_placeholder_32 = 0;
 
 // ---------------------------------------------------------------------
 // Simulator test trace output files.