test/raw: Convert to googletest

Catch2 never really took off and googletest mostly gives us everything
we need.

Change-Id: I5988fa05b6a9ed09a15c063d62736135d2bd0f7d
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/test/meson.build b/test/meson.build
index 8e17d71..113b8c1 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -3,6 +3,7 @@
   'exception',
   'handle/copyable',
   'handle/managed',
+  'raw',
   'signal',
   'util/cexec',
   'util/string',
@@ -138,7 +139,6 @@
 endif
 
 catch2_tests = [
-  'raw',
 ]
 
 if catch2.found()