audio: 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: Idb1a4abf4da9eb6dbe1e9a8fd66461d60985c8e1
diff --git a/audio/aidl/default/EffectMain.cpp b/audio/aidl/default/EffectMain.cpp
index a300cfd..7a6141a 100644
--- a/audio/aidl/default/EffectMain.cpp
+++ b/audio/aidl/default/EffectMain.cpp
@@ -38,7 +38,7 @@
             candidatePath.append(apexName).append("/etc/").append(kDefaultConfigName);
             LOG(DEBUG) << __func__ << " effect lib path " << candidatePath;
             if (access(candidatePath.c_str(), R_OK) == 0) {
-                return std::move(candidatePath);
+                return candidatePath;
             }
         }
     } else {
diff --git a/audio/aidl/default/Module.cpp b/audio/aidl/default/Module.cpp
index 543efd1..c14d06e 100644
--- a/audio/aidl/default/Module.cpp
+++ b/audio/aidl/default/Module.cpp
@@ -391,7 +391,7 @@
 
 Module::Configuration& Module::getConfig() {
     if (!mConfig) {
-        mConfig = std::move(initializeConfig());
+        mConfig = initializeConfig();
     }
     return *mConfig;
 }
diff --git a/audio/common/all-versions/default/7.0/HidlUtils.cpp b/audio/common/all-versions/default/7.0/HidlUtils.cpp
index f89c898..bc056e2 100644
--- a/audio/common/all-versions/default/7.0/HidlUtils.cpp
+++ b/audio/common/all-versions/default/7.0/HidlUtils.cpp
@@ -1025,7 +1025,7 @@
             result = BAD_VALUE;
         }
     }
-    std::string fullHalTags{std::move(halTagsBuffer.str())};
+    std::string fullHalTags{halTagsBuffer.str()};
     strncpy(halTags, fullHalTags.c_str(), AUDIO_ATTRIBUTES_TAGS_MAX_SIZE);
     CONVERT_CHECKED(fullHalTags.length() <= AUDIO_ATTRIBUTES_TAGS_MAX_SIZE ? NO_ERROR : BAD_VALUE,
                     result);