Remove multiprocessing tests - no longer valid

tests/_test_multiprocessing.py

@@ -1,63 +0,0 @@
-#
-# This file is part of OCRmyPDF.
-#
-# OCRmyPDF is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# OCRmyPDF is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with OCRmyPDF.  If not, see <http://www.gnu.org/licenses/>.
-
-from multiprocessing import Process
-from multiprocessing.managers import BaseProxy
-
-from ocrmypdf._jobcontext import JobContext, JobContextManager
-from ocrmypdf.pdfinfo import PageInfo, PdfInfo
-
-
-def test_jobcontext_proxy(resources):
-    # Prove that managers are set up correctly to share state among processes
-    manager = JobContextManager()
-    manager.register('JobContext', JobContext)
-
-    # Start the manager in a child process (or maybe thread)
-    manager.start()
-
-    # Tell the manager process to retrieve pdf info
-    context = manager.JobContext()
-    context.generate_pdfinfo(resources / 'graph.pdf')
-
-    # Get a copy of that information for this process
-    pdfinfo = context.get_pdfinfo()
-    assert len(pdfinfo) == 1
-    assert pdfinfo[0].rotation == 0
-
-    # Update information and send back to manager
-    pdfinfo[0].rotation = 90
-    context.set_pdfinfo(pdfinfo)
-
-    # Retrieve again, ensure it stayed changed
-    pdfinfo2 = context.get_pdfinfo()
-    assert pdfinfo2[0].rotation == 90
-
-    # Start a new process which gets its own proxy object
-    def client(context):
-        assert isinstance(context, BaseProxy)
-        pdfinfo = context.get_pdfinfo()
-        page = pdfinfo[0]
-        assert page.rotation == 90
-        page.rotation += 90
-        context.set_pdfinfo(pdfinfo)
-
-    p = Process(target=client, args=(context,))
-    p.start()
-    p.join()
-    assert p.exitcode == 0, "Child process failed"
-
-    assert context.get_pdfinfo()[0].rotation == 180