Revert of Forward password-store switch to OSCrypt component

components/os_crypt/os_crypt_linux.cc

Index: components/os_crypt/os_crypt_linux.cc
diff --git a/components/os_crypt/os_crypt_linux.cc b/components/os_crypt/os_crypt_linux.cc
index 2104d25047f24771b0e0c89482729ad6cf956fa6..a1c187aef2042c1002637a3574b02207a27a5c7c 100644
--- a/components/os_crypt/os_crypt_linux.cc
+++ b/components/os_crypt/os_crypt_linux.cc
@@ -210,14 +210,6 @@
   return true;
 }
 
-// static
-void OSCrypt::SetStore(const std::string& store_type) {
-  // Changing the targeted password store makes no sense after initializing.
-  DCHECK(!g_cache.Get().is_key_storage_cached);
-
-  KeyStorageLinux::SetStore(store_type);
-}
-
 void UseMockKeyStorageForTesting(KeyStorageLinux* (*get_key_storage_mock)(),
                                  std::string* (*get_password_v11_mock)()) {
   // Save the real implementation to restore it later.