Cleanup - removed datadog - last appearance in nightly 2023-12-26.

Author: alaendle

build-constraints.yaml

@@ -4447,7 +4447,6 @@ packages:
         - th-nowq
 
     "Dan Fithian <daniel.m.fithian@gmail.com> @dfithian":
-        - datadog
         - interpolator
         - file-path-th
 
@@ -6680,7 +6679,6 @@ packages:
         - data-default-instances-vector < 0 # tried data-default-instances-vector-0.0.1, but its *library* requires data-default-class >=0.0 && < 0.1 || >=0.1 && < 0.2 and the snapshot contains data-default-class-0.2.0.0
         - data-forest < 0 # tried data-forest-0.1.0.13, but its *library* requires base ^>=4.18 || ^>=4.19 and the snapshot contains base-4.21.0.0
         - data-tree-print < 0 # tried data-tree-print-0.1.0.2, but its *library* requires base >=4.8 && < 4.17 and the snapshot contains base-4.21.0.0
-        - datadog < 0 # tried datadog-0.3.0.0, but its *library* requires the disabled package: buffer-builder
         - datasets < 0 # tried datasets-0.4.0, but its *library* requires the disabled package: streaming-cassava
         - dawg-ord < 0 # tried dawg-ord-0.5.1.2, but its *library* requires containers >=0.5 && < 0.7 and the snapshot contains containers-0.7
         - dawg-ord < 0 # tried dawg-ord-0.5.1.2, but its *library* requires mtl >=2.1 && < 2.3 and the snapshot contains mtl-2.3.1
@@ -8218,7 +8216,6 @@ expected-test-failures:
     - consul-haskell
     - consumers  # requires PostgreSQL instance
     - cql-io # Cassandra
-    - datadog # requires API keys in env vars https://github.com/fpco/stackage/pull/3308#issuecomment-369535040
     - dbcleaner # Requires running PostgreSQL server
     - dbmigrations # PostgreSQL
     - dbus # #6373/closed