Remove all the lib/inputhook logic and related files.

1) for terminal ipython hooks are in pt_inputhook,
2) for ipykernel the inputhook are in ipykernel itself.

codecov.yml

@@ -1,26 +1,25 b''
 coverage:
   status:
     patch: off
     project:
       default: false
       library:
         target: auto
         paths: ['!.*/tests/.*']
         threshold: 0.1%
       tests:
         target: auto
         paths: ['.*/tests/.*']
 codecov:
   require_ci_to_pass: false
 
 ignore:
   - IPython/kernel/*
   - IPython/consoleapp.py
   - IPython/core/inputsplitter.py
-  - IPython/lib/inputhook*.py
   - IPython/lib/kernel.py
   - IPython/utils/jsonutil.py
   - IPython/utils/localinterfaces.py
   - IPython/utils/log.py
   - IPython/utils/signatures.py
   - IPython/utils/traitlets.py

pytest.ini

@@ -1,48 +1,47 b''
 [pytest]
 addopts = --durations=10
     -p IPython.testing.plugin.pytest_ipdoctest --ipdoctest-modules
     --ignore=docs
     --ignore=examples
     --ignore=htmlcov
     --ignore=ipython_kernel
     --ignore=ipython_parallel
     --ignore=results
     --ignore=tmp
     --ignore=tools
     --ignore=traitlets
     --ignore=IPython/core/tests/daft_extension
     --ignore=IPython/sphinxext
     --ignore=IPython/terminal/pt_inputhooks
     --ignore=IPython/__main__.py
     --ignore=IPython/config.py
     --ignore=IPython/frontend.py
     --ignore=IPython/html.py
     --ignore=IPython/nbconvert.py
     --ignore=IPython/nbformat.py
     --ignore=IPython/parallel.py
     --ignore=IPython/qt.py
     --ignore=IPython/external/qt_for_kernel.py
     --ignore=IPython/html/widgets/widget_link.py
     --ignore=IPython/html/widgets/widget_output.py
     --ignore=IPython/terminal/console.py
     --ignore=IPython/terminal/ptshell.py
     --ignore=IPython/utils/_process_cli.py
     --ignore=IPython/utils/_process_posix.py
     --ignore=IPython/utils/_process_win32.py
     --ignore=IPython/utils/_process_win32_controller.py
     --ignore=IPython/utils/daemonize.py
     --ignore=IPython/utils/eventful.py
 
     --ignore=IPython/kernel
     --ignore=IPython/consoleapp.py
     --ignore=IPython/core/inputsplitter.py
-    --ignore-glob=IPython/lib/inputhook*.py
     --ignore=IPython/lib/kernel.py
     --ignore=IPython/utils/jsonutil.py
     --ignore=IPython/utils/localinterfaces.py
     --ignore=IPython/utils/log.py
     --ignore=IPython/utils/signatures.py
     --ignore=IPython/utils/traitlets.py
     --ignore=IPython/utils/version.py
 doctest_optionflags = NORMALIZE_WHITESPACE ELLIPSIS
 ipdoctest_optionflags = NORMALIZE_WHITESPACE ELLIPSIS