Remove conda & pip installs from doc script (#1563)

This PR removes the conda & pip installs from the doc build script since they're already included in our environment at build time.

Authors:
  - AJ Schmidt (https://github.com/ajschmidt8)

Approvers:
  - Dillon Cullinan (https://github.com/dillon-cullinan)
  - Brad Rees (https://github.com/BradReesWork)

URL: #1563

ci/docs/build.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-# Copyright (c) 2020, NVIDIA CORPORATION.
+# Copyright (c) 2021, NVIDIA CORPORATION.
 #################################
 # cuGraph Docs build script for CI #
 #################################
@@ -28,11 +28,6 @@ gpuci_logger "Activate conda env"
 . /opt/conda/etc/profile.d/conda.sh
 conda activate rapids
 
-# TODO: Move installs to docs-build-env meta package
-gpuci_conda_retry install -c anaconda markdown beautifulsoup4 jq
-pip install sphinx-markdown-tables
-
-
 gpuci_logger "Check versions"
 python --version
 $CC --version