aya: Add `bpf_map_delete_elem` for `XskMap` #888

Job	Run time
lint	3m 12s
build-test-aya (x86_64-unknown-linux-gnu)	2m 43s
run-integration-test (macos-12)	15m 31s
build-test-aya-bpf (x86_64, bpfel-unknown-none)	28s
build-test-aya (aarch64-unknown-linux-gnu)	3m 56s
run-integration-test (ubuntu-22.04)	5m 41s
build-test-aya-bpf (x86_64, bpfeb-unknown-none)	28s
build-test-aya (armv7-unknown-linux-gnueabi)	3m 57s
build-test-aya-bpf (aarch64, bpfel-unknown-none)	30s
build-test-aya (riscv64gc-unknown-linux-gnu)	3m 51s
build-test-aya-bpf (aarch64, bpfeb-unknown-none)	23s
build-test-aya-bpf (arm, bpfel-unknown-none)	23s
build-test-aya-bpf (arm, bpfeb-unknown-none)	24s
build-test-aya-bpf (riscv64, bpfel-unknown-none)	25s
build-test-aya-bpf (riscv64, bpfeb-unknown-none)	28s
build-workflow-complete	1s
	42m 21s

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