[6.0] remove unneeeded NonescapingTypes feature flag from test

Author: kavon

test/Interpreter/moveonly_swiftskell.swift

@@ -7,8 +7,7 @@
 // RUN:    -enable-library-evolution \
 // RUN:    -parse-as-library \
 // RUN:    %S/../Inputs/Swiftskell.swift \
-// RUN:   -enable-experimental-feature SuppressedAssociatedTypes \
-// RUN:   -enable-experimental-feature NonescapableTypes
+// RUN:   -enable-experimental-feature SuppressedAssociatedTypes
 
 // RUN: %target-build-swift -I%t -L%t -lSwiftskell -parse-as-library %s \
 // RUN:                     -module-name E -o %t/E %target-rpath(%t)