Get rid of VoidPromise and (almost) Promise

We only retain RemotePromise for its pipelining capabilities.

capnp/includes/capnp_cpp.pxd

@@ -5,7 +5,7 @@ cdef extern from "capnp/helpers/checkCompiler.h":
 
 from libcpp cimport bool
 from capnp.helpers.non_circular cimport (
-    PythonInterfaceDynamicImpl, reraise_kj_exception, PyRefCounter, ErrorHandler,
+    PythonInterfaceDynamicImpl, reraise_kj_exception, PyRefCounter,
 )
 from capnp.includes.schema_cpp cimport (
     Node, Data, StructNode, EnumNode, InterfaceNode, MessageBuilder, MessageReader, ReaderOptions,
@@ -52,8 +52,6 @@ cdef extern from "kj/memory.h" namespace " ::kj":
         T& operator*()
         T* get()
     Own[T] heap[T](...)
-    Own[TwoPartyVatNetwork] makeTwoPartyVatNetwork" ::kj::heap< ::capnp::TwoPartyVatNetwork>"(
-        AsyncIoStream& stream, Side, ReaderOptions)
 
 cdef extern from "kj/async.h" namespace " ::kj":
     cdef cppclass Promise[T] nogil:
@@ -108,72 +106,12 @@ cdef extern from "kj/array.h" namespace " ::kj":
         T& add(T&)
         Array[T] finish()
 
-    ArrayBuilder[PyPromise] heapArrayBuilderPyPromise"::kj::heapArrayBuilder< ::kj::Promise<kj::Own<PyRefCounter>> >"(size_t) nogil
-
-    ctypedef Array[Own[PyRefCounter]] PyArray' ::kj::Array<kj::Own<PyRefCounter>>'
-
-ctypedef Promise[PyArray] PyPromiseArray
-
-cdef extern from "kj/time.h" namespace " ::kj":
-    cdef cppclass Duration nogil:
-        Duration operator*(int64_t)
-    Duration NANOSECONDS
-    Duration MICROSECONDS
-    Duration MILLISECONDS
-    Duration SECONDS
-    Duration MINUTES
-    Duration HOURS
-    Duration DAYS
-    cdef cppclass TimePoint:
-        TimePoint(Duration)
-    cdef cppclass MonotonicClock nogil:
-        MonotonicClock(MonotonicClock&)
-        TimePoint now()
-    MonotonicClock systemPreciseMonotonicClock()
-
-cdef extern from "kj/timer.h" namespace " ::kj":
-    cdef cppclass Timer nogil:
-        # int64_t now()
-        # VoidPromise atTime(TimePoint time)
-        VoidPromise afterDelay(Duration delay)
-    cdef cppclass TimerImpl(Timer) nogil:
-        TimerImpl(TimePoint startTime)
-        Maybe[TimePoint] nextEvent()
-        Maybe[uint64_t] timeoutToNextEvent(TimePoint start, Duration unit, uint64_t max)
-        void advanceTo(TimePoint newTime)
-
-cdef inline Duration Nanoseconds(int64_t nanos):
-    return NANOSECONDS * nanos
 
 cdef extern from "kj/async-io.h" namespace " ::kj":
     cdef cppclass AsyncIoStream nogil:
         Promise[size_t] read(void*, size_t, size_t)
         Promise[void] write(const void*, size_t)
 
-    cdef cppclass LowLevelAsyncIoProvider:
-        # Own[AsyncInputStream] wrapInputFd(int)
-        # Own[AsyncOutputStream] wrapOutputFd(int)
-        Own[AsyncIoStream] wrapSocketFd(int)
-        Timer& getTimer() except +reraise_kj_exception
-
-    cdef cppclass AsyncIoProvider nogil:
-        TwoWayPipe newTwoWayPipe()
-
-    cdef cppclass AsyncIoContext nogil:
-        AsyncIoContext(AsyncIoContext&)
-        Own[LowLevelAsyncIoProvider] lowLevelProvider
-        Own[AsyncIoProvider] provider
-        WaitScope waitScope
-
-    cdef cppclass TaskSet nogil:
-        TaskSet(ErrorHandler &)
-
-    cdef cppclass TwoWayPipe nogil:
-        Own[AsyncIoStream] ends[2]
-
-    AsyncIoContext setupAsyncIo() nogil
-    Own[AsyncIoProvider] newAsyncIoProvider(LowLevelAsyncIoProvider& lowLevel);
-
 cdef extern from "capnp/schema.capnp.h" namespace " ::capnp":
     enum TypeWhich" ::capnp::schema::Type::Which":
         TypeWhichVOID " ::capnp::schema::Type::Which::VOID"
@@ -551,7 +489,6 @@ cdef extern from "kj/async.h" namespace " ::kj":
     cdef cppclass VoidPromiseFulfiller"::kj::PromiseFulfiller<void>" nogil:
         void fulfill()
         void reject(Exception&& exception)
-    PyPromiseArray joinPromises(Array[PyPromise]) nogil
 
 cdef extern from "capnp/helpers/capabilityHelper.h":
     cdef cppclass PyAsyncIoStream(AsyncIoStream):