Prefer `= delete` in place of DISALLOW_COPY_AND_ASSIGN.

Clang-tidy expects modernized code to prefer deleting copy constructors
and assignment operators to legacy macros.

/disk/android_trees/aosp-master-plus-llvm/frameworks/base/cmds/idmap2/tests/ResultTests.cpp:263:3: error: prefer deleting copy constructor and assignment operator over using macro 'DISALLOW_COPY_AND_ASSIGN' [modernize-replace-disal low-copy-and-assign-macro,-warnings-as-errors]
  DISALLOW_COPY_AND_ASSIGN(NoCopyContainer);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Bug: http://b/155835175
Test: mm in idmap2
Change-Id: I3bb29b48a478a67cbda959f47b271ccf8543a768