Everywhere: Use LibFileSystem where trivial

Author: https://github.com/cammo1123
Commit: 1d24f394c6
Pull-request: https://github.com/SerenityOS/serenity/pull/17789
Reviewed-by: https://github.com/AtkinsSJ
Reviewed-by: https://github.com/caoimhebyrne
Reviewed-by: https://github.com/kleinesfilmroellchen ✅
Reviewed-by: https://github.com/linusg
Reviewed-by: https://github.com/pascalpuffke
Reviewed-by: https://github.com/timschumi ✅

Userland/Utilities/rm.cpp

@@ -7,8 +7,8 @@
 #include <AK/StringBuilder.h>
 #include <AK/Vector.h>
 #include <LibCore/ArgsParser.h>
-#include <LibCore/DeprecatedFile.h>
 #include <LibCore/System.h>
+#include <LibFileSystem/FileSystem.h>
 #include <LibMain/Main.h>
 #include <stdio.h>
 #include <unistd.h>
@@ -43,7 +43,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
             continue;
         }
 
-        auto result = Core::DeprecatedFile::remove(path, recursive ? Core::DeprecatedFile::RecursionMode::Allowed : Core::DeprecatedFile::RecursionMode::Disallowed);
+        auto result = FileSystem::remove(path, recursive ? FileSystem::RecursionMode::Allowed : FileSystem::RecursionMode::Disallowed);
 
         if (result.is_error()) {
             auto error = result.release_error();