Remove redundant using namespace Fallback

C++ has ADL to find overloads. using namespace does nothing in this
case.

apps/bulletobjecttool/main.cpp

@@ -53,8 +53,6 @@ namespace
 
     bpo::options_description makeOptionsDescription()
     {
-        using Fallback::FallbackMap;
-
         bpo::options_description result;
         auto addOption = result.add_options();
         addOption("help", "print help message");
@@ -87,7 +85,8 @@ namespace
             "\n\twin1251 - Cyrillic alphabet such as Russian, Bulgarian, Serbian Cyrillic and other languages\n"
             "\n\twin1252 - Western European (Latin) alphabet, used by default");
 
-        addOption("fallback", bpo::value<FallbackMap>()->default_value(FallbackMap(), "")->multitoken()->composing(),
+        addOption("fallback",
+            bpo::value<Fallback::FallbackMap>()->default_value(Fallback::FallbackMap(), "")->multitoken()->composing(),
             "fallback values");
 
         Files::ConfigurationManager::addCommonOptions(result);

apps/navmeshtool/main.cpp

@@ -62,8 +62,6 @@ namespace NavMeshTool
 
         bpo::options_description makeOptionsDescription()
         {
-            using Fallback::FallbackMap;
-
             bpo::options_description result;
             auto addOption = result.add_options();
             addOption("help", "print help message");

apps/opencs/editor.cpp

@@ -38,8 +38,6 @@
 
 #include "view/doc/viewmanager.hpp"
 
-using namespace Fallback;
-
 CS::Editor::Editor(int argc, char** argv)
     : mConfigVariables(readConfiguration())
     , mSettingsState(mCfgMgr)
@@ -124,7 +122,10 @@ boost::program_options::variables_map CS::Editor::readConfiguration()
             ->default_value(std::vector<std::string>(), "fallback-archive")
             ->multitoken());
     addOption("fallback",
-        boost::program_options::value<FallbackMap>()->default_value(FallbackMap(), "")->multitoken()->composing(),
+        boost::program_options::value<Fallback::FallbackMap>()
+            ->default_value(Fallback::FallbackMap(), "")
+            ->multitoken()
+            ->composing(),
         "fallback values");
     Files::ConfigurationManager::addCommonOptions(desc);
 
@@ -141,7 +142,7 @@ std::pair<Files::PathContainer, std::vector<std::string>> CS::Editor::readConfig
 {
     boost::program_options::variables_map& variables = mConfigVariables;
 
-    Fallback::Map::init(variables["fallback"].as<FallbackMap>().mMap);
+    Fallback::Map::init(variables["fallback"].as<Fallback::FallbackMap>().mMap);
 
     mEncodingName = variables["encoding"].as<std::string>();
     mDocumentManager.setEncoding(ToUTF8::calculateEncoding(mEncodingName));

apps/openmw/main.cpp

@@ -28,8 +28,6 @@ extern "C" __declspec(dllexport) DWORD AmdPowerXpressRequestHighPerformance = 0x
 #include <unistd.h>
 #endif
 
-using namespace Fallback;
-
 /**
  * \brief Parses application command line and calls \ref Cfg::ConfigurationManager
  * to parse configuration files.
@@ -152,7 +150,7 @@ bool parseOptions(int argc, char** argv, OMW::Engine& engine, Files::Configurati
     engine.setSaveGameFile(variables["load-savegame"].as<Files::MaybeQuotedPath>().u8string());
 
     // other settings
-    Fallback::Map::init(variables["fallback"].as<FallbackMap>().mMap);
+    Fallback::Map::init(variables["fallback"].as<Fallback::FallbackMap>().mMap);
     engine.setSoundUsage(!variables["no-sound"].as<bool>());
     engine.setActivationDistanceOverride(variables["activate-dist"].as<int>());
     engine.enableFontExport(variables["export-fonts"].as<bool>());