refactor: remove deprecated installTailCalls function and its usage

[arthur-zhang]

Since we do tailcall map initialize in ebpf side, we do not need do in go files.

Description

we refract tail call map initialize in ebpf c code like this, and remove sec name from "kprobe/#idx" to "kprobe", the go code is useless.

struct {
	__uint(type, BPF_MAP_TYPE_PROG_ARRAY);
	__uint(max_entries, 13);
	__uint(key_size, sizeof(__u32));
	__array(values, int(void *));
} kprobe_calls SEC(".maps") = {
	.values = {
		[0] = (void *)&generic_kprobe_setup_event,
		[1] = (void *)&generic_kprobe_process_event,
		[2] = (void *)&generic_kprobe_process_filter,
		[3] = (void *)&generic_kprobe_filter_arg,
		[4] = (void *)&generic_kprobe_actions,
		[5] = (void *)&generic_kprobe_output,
	},
};

previous:

__attribute__((section("kprobe/0"), used)) int
generic_kprobe_setup_event(void *ctx)

current:

__attribute__((section("kprobe"), used)) int
generic_kprobe_setup_event(void *ctx)

[olsajiri]

sorry but I'd like to keep that code around as a possibility to setup tailcalls,
there could also be some users of that.. plus it's not that much code

[arthur-zhang]

got it