Fix the install of TensorBoard for doc generation (pytorch#19814)

Summary:
One more fix for pytorch#19810

We now know that we are running with python3, so no need to check python version. The quotes were probably causing problems here.

cc ezyang soumith zou3519
Pull Request resolved: pytorch#19814

Differential Revision: D15106459

Pulled By: orionr

fbshipit-source-id: 0443b9b54d17fead9c8c2c9d8d2f373e1f95a28b

.circleci/config.yml

@@ -110,13 +110,8 @@ install_doc_push_script: &install_doc_push_script
 
     rm -rf pytorch || true
 
-    # Install TensorBoard so torch.utils.tensorboard classes render
-    PYTHON_VERSION=$(python -c 'import platform; print(platform.python_version())'|cut -c1)
-    if [[ $PYTHON_VERSION == "2" ]]; then
-      pip install -q https://s3.amazonaws.com/ossci-linux/wheels/tensorboard-1.14.0a0-py2-none-any.whl
-    else
-      pip install -q https://s3.amazonaws.com/ossci-linux/wheels/tensorboard-1.14.0a0-py3-none-any.whl
-    fi
+    # Install TensorBoard in python 3 so torch.utils.tensorboard classes render
+    pip install -q https://s3.amazonaws.com/ossci-linux/wheels/tensorboard-1.14.0a0-py3-none-any.whl
 
     # Get all the documentation sources, put them in one place
     pushd "\$pt_checkout"

.circleci/verbatim-sources/header-section.yml

@@ -110,13 +110,8 @@ install_doc_push_script: &install_doc_push_script
 
     rm -rf pytorch || true
 
-    # Install TensorBoard so torch.utils.tensorboard classes render
-    PYTHON_VERSION=$(python -c 'import platform; print(platform.python_version())'|cut -c1)
-    if [[ $PYTHON_VERSION == "2" ]]; then
-      pip install -q https://s3.amazonaws.com/ossci-linux/wheels/tensorboard-1.14.0a0-py2-none-any.whl
-    else
-      pip install -q https://s3.amazonaws.com/ossci-linux/wheels/tensorboard-1.14.0a0-py3-none-any.whl
-    fi
+    # Install TensorBoard in python 3 so torch.utils.tensorboard classes render
+    pip install -q https://s3.amazonaws.com/ossci-linux/wheels/tensorboard-1.14.0a0-py3-none-any.whl
 
     # Get all the documentation sources, put them in one place
     pushd "\$pt_checkout"