Revert "README.md: update CI status"

This reverts commit 9364c13.

Author: yamt

README.md

@@ -72,17 +72,15 @@ It includes
 |Ubuntu/amd64            |Yes              |                             |
 |Ubuntu/i386             |Yes              |32-bit, smaller alignment    |
 |Ubuntu/arm64            |Yes (on qemu)    |                             |
-|Ubuntu/armhf            |[Disabled]       |32-bit                       |
-|Ubuntu/s390x            |[Disabled]       |Big endian                   |
+|Ubuntu/armhf            |Yes (on qemu)    |32-bit                       |
+|Ubuntu/s390x            |Yes (on qemu)    |Big endian                   |
 |Ubuntu/riscv64          |Yes (on qemu)    |                             |
 |Windows/X64             |Yes              |Core wasm only               |
 |wasm32-wasi-threads     |No               |Occasionally tested manually |
 |NuttX/esp32             |No               |Occasionally tested manually |
 |NuttX/sim on macOS/amd64|No               |Occasionally tested manually |
 |NetBSD/amd64            |No               |Occasionally tested manually |
 
-[Disabled]: https://github.com/yamt/toywasm/pull/238#issuecomment-2226868990
-
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