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: I4c769b174bb2a1fab2928c4887dcb70d82f264fa
diff --git a/libs/androidfw/PosixUtils.cpp b/libs/androidfw/PosixUtils.cpp
index 8ddc572..49ee8f7 100644
--- a/libs/androidfw/PosixUtils.cpp
+++ b/libs/androidfw/PosixUtils.cpp
@@ -119,7 +119,7 @@
       auto err = ReadFile(stderr[0]);
       result.stderr_str = err ? std::move(*err) : "";
       close(stderr[0]);
-      return std::move(result);
+      return result;
   }
 }
 
diff --git a/media/jni/android_media_MediaCodecLinearBlock.h b/media/jni/android_media_MediaCodecLinearBlock.h
index 060abfd..ffbf0a8 100644
--- a/media/jni/android_media_MediaCodecLinearBlock.h
+++ b/media/jni/android_media_MediaCodecLinearBlock.h
@@ -62,7 +62,7 @@
             std::shared_ptr<C2Buffer> buffer =
                 C2Buffer::CreateLinearBuffer(block.subBlock(offset, size));
             for (const std::shared_ptr<const C2Info> &info : mBuffer->info()) {
-                std::shared_ptr<C2Param> param = std::move(C2Param::Copy(*info));
+                std::shared_ptr<C2Param> param = C2Param::Copy(*info);
                 buffer->setInfo(std::static_pointer_cast<C2Info>(param));
             }
             return buffer;