crucible: remove unused execpipe

Signed-off-by: Zygo Blaxell <bees@furryterror.org>

include/crucible/execpipe.h

@@ -1,28 +0,0 @@
-#ifndef CRUCIBLE_EXECPIPE_H
-#define CRUCIBLE_EXECPIPE_H
-
-#include "crucible/fd.h"
-
-#include <functional>
-#include <limits>
-#include <string>
-
-namespace crucible {
-	using namespace std;
-
-	void redirect_stdin(const Fd &child_fd);
-	void redirect_stdin_stdout(const Fd &child_fd);
-	void redirect_stdin_stdout_stderr(const Fd &child_fd);
-	void redirect_stdout(const Fd &child_fd);
-	void redirect_stdout_stderr(const Fd &child_fd);
-
-	// Open a pipe (actually socketpair) to child process, then execute code in that process.
-	// e.g. popen([] () { system("echo Hello, World!"); });
-	// Forked process will exit when function returns.
-	Fd popen(function<int()> f, function<void(const Fd &child_fd)> import_fd_fn = redirect_stdin_stdout);
-
-	// Read all the data from fd into a string
-        string read_all(Fd fd, size_t max_bytes = numeric_limits<size_t>::max(), size_t chunk_bytes = 4096);
-};
-
-#endif // CRUCIBLE_EXECPIPE_H