build: Remove forced lto

meson has an option for enabling LTO and we do so inside of releases. We
don't want to spend extra time with this for unit tests where we don't
care about binary size.

Change-Id: Id2642a72a671d4ea13cb6b0d5f383f2a509cfff3
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meson.build b/meson.build
index f431b9c..1fd2b6b 100644
--- a/meson.build
+++ b/meson.build
@@ -90,7 +90,6 @@
 
 add_project_arguments(
   cpp.get_supported_arguments([
-    '-flto',
     '-Wno-psabi',
     '-Wno-missing-field-initializers',
     '-Wno-pedantic',