Remove default/system target directories

These have been folded into the logic for fetching default and system
builds.

Bug: b/457520264

Author: Databean

base/cvd/cuttlefish/host/commands/cvd/fetch/fetch_cvd.cc

@@ -92,10 +92,6 @@ Result<void> EnsureDirectoriesExist(const std::string& host_tools_directory,
   for (const auto& target : targets) {
     CF_EXPECT(EnsureDirectoryExists(target.directories.root, kRwxAllMode));
     CF_EXPECT(EnsureDirectoryExists(target.directories.otatools, kRwxAllMode));
-    CF_EXPECT(EnsureDirectoryExists(target.directories.default_target_files,
-                                    kRwxAllMode));
-    CF_EXPECT(EnsureDirectoryExists(target.directories.system_target_files,
-                                    kRwxAllMode));
     CF_EXPECT(EnsureDirectoryExists(target.directories.chrome_os, kRwxAllMode));
   }
   return {};

base/cvd/cuttlefish/host/commands/cvd/fetch/target_directories.cc

@@ -33,8 +33,6 @@ TargetDirectories TargetDirectories::Create(
   }
   return TargetDirectories{.root = base_directory,
                            .otatools = base_directory + "/otatools/",
-                           .default_target_files = base_directory + "/default",
-                           .system_target_files = base_directory + "/system",
                            .chrome_os = base_directory + "/chromeos"};
 }
 

base/cvd/cuttlefish/host/commands/cvd/fetch/target_directories.h

@@ -28,8 +28,6 @@ struct TargetDirectories {
 
   std::string root;
   std::string otatools;
-  std::string default_target_files;
-  std::string system_target_files;
   std::string chrome_os;
 };