Simpleperf: remove unnecessary std::move.

Bug: 19483574
Change-Id: I2b49ded640c799058b448ddce7f92b5cecd86de3
diff --git a/simpleperf/record_file_reader.cpp b/simpleperf/record_file_reader.cpp
index b78af51..6c52801 100644
--- a/simpleperf/record_file_reader.cpp
+++ b/simpleperf/record_file_reader.cpp
@@ -143,7 +143,7 @@
   while (p < end) {
     const perf_event_header* header = reinterpret_cast<const perf_event_header*>(p);
     if (p + header->size <= end) {
-      result.push_back(std::move(ReadRecordFromBuffer(attr, header)));
+      result.push_back(ReadRecordFromBuffer(attr, header));
     }
     p += header->size;
   }