Remove unnecessary std::move

Moving a temporary object prevents copy elision, and could reduce
performance.

This fixes -Wpessimizing-move compiler warning.

Test: presubmit
Bug: 154270751
Change-Id: Ia0b02d90c239572c953007272f75900ee77c6305
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 1f4e16e..3ef23e4 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -4491,7 +4491,7 @@
             // TODO(b/184194057): Use the vibrator information from the vibrator that will be used
             // for the HapticGenerator.
             const std::optional<media::AudioVibratorInfo> defaultVibratorInfo =
-                    std::move(getDefaultVibratorInfo_l());
+                    getDefaultVibratorInfo_l();
             if (defaultVibratorInfo) {
                 // Only set the vibrator info when it is a valid one.
                 audio_utils::lock_guard _cl(chain->mutex());