Kernel: Remove offset from OpenFileDescriptor

This is now handled on the libc side. There might be reasons to
have it in kernel side, but for simplicity's sake I'm moving it
to libc for now :)

LibELF/LibELF/ELF.cpp

@@ -25,7 +25,7 @@ namespace LibELF
 
 			TRY(data.resize(st.st_size));
 
-			TRY(Kernel::Process::current().read(fd, data.data(), data.size()));
+			TRY(Kernel::Process::current().read(fd, data.data(), 0, data.size()));
 
 			elf = new ELF(BAN::move(data));
 			ASSERT(elf);