fixes compile

Author: actboy168

bee/subprocess/subprocess_posix.cpp

@@ -136,22 +136,6 @@ namespace bee::subprocess {
         }
     }
 
-    void spawn::redirect(stdio type, file_handle h) noexcept {
-        switch (type) {
-        case stdio::eInput:
-            fds_[0] = h.value();
-            break;
-        case stdio::eOutput:
-            fds_[1] = h.value();
-            break;
-        case stdio::eError:
-            fds_[2] = h.value();
-            break;
-        default:
-            std::unreachable();
-        }
-    }
-
     void spawn::env(environment&& env) noexcept {
         env_ = std::move(env);
     }