Remove out-of-date conda recipe

conda/meta.yaml

-package:
-  name: aesara
-  version: {{ environ.get('AESARA_VERSION') }}
-
-source:
-  path: ../
-
-build:
-  script: python setup.py install --single-version-externally-managed --record record.txt
-
-requirements:
-  build:
-    - python
-    - setuptools
-  run:
-    - python
-    - mkl-service
-    - libpython >=2.0  [win]
-    - m2w64-toolchain  [win]
-    - numpy >=1.9.1
-    - scipy >=0.14.0
-    - {{ pin_compatible('pygpu', '0.7', max_pin='0.8') }}   # [not osx]
-    - jax  # [py>=37 and not win]
-    - filelock
-
-test:
-  imports:
-    - aesara
-
-about:
-  home: https://github.com/aesara-devs/aesara/
-  license: BSD 3-Clause
-  license_family: BSD
-  summary: Optimizing compiler for evaluating mathematical expressions on CPUs and GPUs.
-  summary: An optimizing compiler for evaluating mathematical expressions on CPUs and GPUs.
-  dev_url: https://github.com/aesara-devs/aesara/
-  doc_url: https://aesara.readthedocs.io/en/latest/index.html