stdlib: remove '-disable-access-control' from a floating point test

Author: gribozavr

test/1_stdlib/FloatingPoint.swift.gyb

@@ -1,5 +1,5 @@
 // RUN: rm -rf %t && mkdir -p %t && %gyb %s -o %t/FloatingPoint.swift
-// RUN: %line-directive %t/FloatingPoint.swift -- %target-build-swift -parse-stdlib -Xfrontend -disable-access-control %t/FloatingPoint.swift -o %t/a.out
+// RUN: %line-directive %t/FloatingPoint.swift -- %target-build-swift -parse-stdlib %t/FloatingPoint.swift -o %t/a.out
 // RUN: %line-directive %t/FloatingPoint.swift -- %target-run %t/a.out
 // REQUIRES: executable_test