2917a65 [ios] Remove unused is_valid_ from IOS Metal Context (flutter/engine#21432)

engine-flutter-autoroll · engine-flutter-autoroll · commit 96e709f14641 · 2020-09-28T17:14:43.000Z
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
@@ -1 +1 @@
-f72613d989f6310ea1c5f4eefd976dd0b0fa0a41
+2917a650110bd9232eaea23fe35f3c2c27abe877
