Privatize low-level adb functions

Only expose the interruptible user-friendly API.

app/src/adb.h

@@ -6,44 +6,11 @@
 #include <stdbool.h>
 #include <inttypes.h>
 
-#include "util/process.h"
 #include "util/intr.h"
 
 sc_pid
 adb_execute(const char *serial, const char *const adb_cmd[], size_t len);
 
-sc_pid
-adb_execute_p(const char *serial, const char *const adb_cmd[], size_t len,
-              sc_pipe *pout);
-
-sc_pid
-adb_exec_forward(const char *serial, uint16_t local_port,
-                 const char *device_socket_name);
-
-sc_pid
-adb_exec_forward_remove(const char *serial, uint16_t local_port);
-
-sc_pid
-adb_exec_reverse(const char *serial, const char *device_socket_name,
-                 uint16_t local_port);
-
-sc_pid
-adb_exec_reverse_remove(const char *serial, const char *device_socket_name);
-
-sc_pid
-adb_exec_push(const char *serial, const char *local, const char *remote);
-
-sc_pid
-adb_exec_install(const char *serial, const char *local);
-
-/**
- * Execute `adb get-serialno`
- *
- * The result can be read from the output parameter `pout`.
- */
-sc_pid
-adb_exec_get_serialno(sc_pipe *pout);
-
 bool
 adb_forward(struct sc_intr *intr, const char *serial, uint16_t local_port,
             const char *device_socket_name);