Revert noexcept because _fatal_error() may raise

* __uv_stream_on_read_common()
* __uv_stream_on_read_impl()
* __uv_stream_on_write_impl()

uvloop/handles/stream.pyx

@@ -759,7 +759,7 @@ cdef inline bint __uv_stream_on_read_common(
     UVStream sc,
     Loop loop,
     ssize_t nread,
-) noexcept:
+):
     if sc._closed:
         # The stream was closed, there is no reason to
         # do any work now.
@@ -822,7 +822,7 @@ cdef inline void __uv_stream_on_read_impl(
     uv.uv_stream_t* stream,
     ssize_t nread,
     const uv.uv_buf_t* buf,
-) noexcept:
+):
     cdef:
         UVStream sc = <UVStream>stream.data
         Loop loop = sc._loop
@@ -853,7 +853,7 @@ cdef inline void __uv_stream_on_read_impl(
 cdef inline void __uv_stream_on_write_impl(
     uv.uv_write_t* req,
     int status,
-) noexcept:
+):
     cdef:
         _StreamWriteContext ctx = <_StreamWriteContext> req.data
         UVStream stream = <UVStream>ctx.stream