Remove chatchat program #624

Job	Run time
Buildroot (qemu_x86_defconfig, glibc)	2m 24s
Buildroot (qemu_x86_defconfig, uclibc)	2m 11s
Buildroot (qemu_x86_defconfig, musl)	2m 16s
Buildroot (qemu_x86_64_defconfig, glibc)	1m 29s
Buildroot (qemu_x86_64_defconfig, uclibc)	1m 33s
Buildroot (qemu_x86_64_defconfig, musl)	1m 38s
Buildroot (raspberrypi4_defconfig, glibc)	1m 38s
Buildroot (raspberrypi4_defconfig, uclibc)	1m 38s
Buildroot (raspberrypi4_defconfig, musl)	2m 19s
Buildroot (raspberrypi4_64_defconfig, glibc)	1m 34s
Buildroot (raspberrypi4_64_defconfig, uclibc)	1m 31s
Buildroot (raspberrypi4_64_defconfig, musl)	1m 33s
Buildroot (qemu_ppc64le_pseries_defconfig, glibc)	1m 37s
Buildroot (qemu_ppc64le_pseries_defconfig, uclibc)	2m 13s
Buildroot (qemu_ppc64le_pseries_defconfig, musl)	1m 30s
Buildroot (qemu_mips32r2_malta_defconfig, glibc)	1m 32s
Buildroot (qemu_mips32r2_malta_defconfig, uclibc)	2m 11s
Buildroot (qemu_mips32r2_malta_defconfig, musl)	1m 28s
Buildroot (qemu_mips64_malta_defconfig, glibc)	1m 32s
Buildroot (qemu_mips64_malta_defconfig, uclibc)	1m 25s
Buildroot (qemu_mips64_malta_defconfig, musl)	2m 17s
Buildroot (qemu_riscv32_virt_defconfig, glibc)	2m 16s
Buildroot (qemu_riscv32_virt_defconfig, uclibc)	1m 38s
Buildroot (qemu_riscv32_virt_defconfig, musl)	2m 16s
Buildroot (qemu_riscv64_virt_defconfig, glibc)	1m 42s
Buildroot (qemu_riscv64_virt_defconfig, uclibc)	1m 32s
Buildroot (qemu_riscv64_virt_defconfig, musl)	1m 38s
	48m 31s

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