TST: Update Conda CI build to use nightly pandas packages.

Remove unused git-based pip requirements file.

Author: tswast

.circleci/config.yml

@@ -45,12 +45,12 @@ jobs:
       - run: nox -s lint
 
   # Conda
-  "conda-3.6-0.20.1":
+  "conda-3.6-NIGHTLY":
     docker:
       - image: continuumio/miniconda3
     environment:
       PYTHON: "3.6"
-      PANDAS: "0.20.1"
+      PANDAS: "NIGHTLY"
     steps:
       - checkout
       - run: ci/config_auth.sh
@@ -65,4 +65,4 @@ workflows:
       - "pip-3.6"
       - "pip-3.7"
       - lint
-      - "conda-3.6-0.20.1"
+      - "conda-3.6-NIGHTLY"

ci/requirements-3.6-MASTER.pip

@@ -1,5 +1,5 @@
 pydata-google-auth
-google-cloud-bigquery==1.9.0
+google-cloud-bigquery==1.10.0
 pytest
 pytest-cov
 codecov

ci/requirements-3.6-0.20.1.conda renamed to ci/requirements-3.6-NIGHTLY.conda

@@ -11,7 +11,7 @@ conda update -q conda
 conda info -a
 conda create -q -n test-environment python=$PYTHON
 source activate test-environment
-if [[ "$PANDAS" == "MASTER" ]]; then
+if [[ "$PANDAS" == "NIGHTLY" ]]; then
   conda install -q numpy pytz python-dateutil;
   PRE_WHEELS="https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a83.ssl.cf2.rackcdn.com";
   pip install --pre --upgrade --timeout=60 -f $PRE_WHEELS pandas;