submodules: update clippy from f5d868c to 70ca052

matthiaskrgr · matthiaskrgr · commit 60fe712ee811 · 2018-11-21T15:10:05.000+01:00
```` rustup #52591 remove unused allow() attributes, NFC Add regression test Don't emit suggestion when inside of a macro ````
diff --git a/src/tools/clippy b/src/tools/clippy
@@ -1 +1 @@
-Subproject commit f5d868c9edfc6c2a9310d564a2f738bec67dfd6b
+Subproject commit 70ca0523975596409210e0bf41d21bc48a54d4ec
