Fix compilation with GCC 4.7

Fix compilation with GCC 4.7

GCC 4.7 has some weird behaviour expecting some destructors to be declared
explicitly with "noexcept(true)":

  In file included from /data/src/security/nether/src/nether_Manager.cpp:25:0:
  /data/src/security/nether/src/../include/nether_Manager.h:37:3: error: looser throw specifier for ‘virtual NetherManager::~NetherManager()’
  In file included from /data/src/security/nether/src/../include/nether_Manager.h:28:0,
                   from /data/src/security/nether/src/nether_Manager.cpp:25:
  /data/src/security/nether/src/../include/nether_Types.h:200:11: error:   overriding ‘virtual NetherVerdictListener::~NetherVerdictListener() noexcept (true)’

Change-Id: I2b12d7b6255d4057a3b9f198c1ca2c5c9d477ea1