remove LGTM

.lgtm.yml

@@ -1,22 +0,0 @@
-extraction:
-  python:
-    after_prepare:
-      - |
-        # https://discuss.lgtm.com/t/determination-of-python-requirements/974/4
-        sed -i 's/\("pyOpenSSL\)/\# Dependency removed for lgtm  (see .lgtm.yml): \1/g' src/allmydata/_auto_deps.py
-
-queries:
-  # This generates spurious errors for calls by interface because of the
-  # zope.interface choice to exclude self from method signatures.  So, turn it
-  # off.
-  - exclude: "py/call/wrong-arguments"
-
-  # The premise of this query is broken.  The errors it produces are nonsense.
-  # There is no such thing as a "procedure" in Python and "None" is not
-  # meaningless.
-  - exclude: "py/procedure-return-value-used"
-
-  # It is true that this query identifies things which are sometimes mistakes.
-  # However, it also identifies things which are entirely valid.  Therefore,
-  # it produces noisy results.
-  - exclude: "py/implicit-string-concatenation-in-list"