Fix platform compilation.

platform/platform_mac.mm

@@ -69,12 +69,6 @@ Platform::~Platform()
 {
 }
 
-bool Platform::IsFileExistsByFullPath(string const & filePath)
-{
-  struct stat s;
-  return stat(filePath.c_str(), &s) == 0;
-}
-
 int Platform::CpuCores() const
 {
   int mib[2], numCPU = 0;

platform/platform_qt.cpp

@@ -17,13 +17,6 @@ ModelReader * Platform::GetReader(string const & file) const
                         READER_CHUNK_LOG_SIZE, READER_CHUNK_LOG_COUNT);
 }
 
-bool Platform::GetFileSizeByFullPath(string const & filePath, uint64_t & size)
-{
-  QFileInfo f(filePath.c_str());
-  size = static_cast<uint64_t>(f.size());
-  return size != 0;
-}
-
 bool Platform::GetFileSizeByName(string const & fileName, uint64_t & size) const
 {
   try

platform/platform_unix_impl.cpp

@@ -6,10 +6,10 @@
 #include <dirent.h>
 #include <sys/stat.h>
 
-#ifdef OMIM_OS_ANDROID
-  #include <sys/vfs.h>
-#else
+#if defined(OMIM_OS_MAC) || defined(OMIM_OS_IPHONE)
   #include <sys/mount.h>
+#else
+  #include <sys/vfs.h>
 #endif