trivial: delete .swp file

should never have been committed
diff --git a/libsel4utils/arch_include/riscv/sel4utils/arch/.mapping.h.swp b/libsel4utils/arch_include/riscv/sel4utils/arch/.mapping.h.swp
deleted file mode 100644
index 902eb51..0000000
--- a/libsel4utils/arch_include/riscv/sel4utils/arch/.mapping.h.swp
+++ /dev/null
Binary files differ