Disable two stdlib tests in optimization mode.

Until rdar://problem/30579713 is fixed.

Author: eeckstein

validation-test/stdlib/Arrays.swift.gyb

@@ -1,6 +1,9 @@
 // RUN: %target-run-simple-swiftgyb
 // REQUIRES: executable_test
 
+// Disabled for optimization until rdar://problem/30579713 is fixed.
+// REQUIRES: swift_test_mode_optimize_none
+
 import StdlibUnittest
 import StdlibCollectionUnittest
 

validation-test/stdlib/Lazy.swift.gyb

@@ -12,6 +12,9 @@
 // RUN: %target-run-simple-swiftgyb
 // REQUIRES: executable_test
 
+// Disabled for optimization until rdar://problem/30579713 is fixed.
+// REQUIRES: swift_test_mode_optimize_none
+
 import StdlibUnittest
 import StdlibCollectionUnittest