update tmuxp.yaml to rm -rf old .env/build files

Author: tony

.tmuxp.yaml

@@ -8,6 +8,7 @@ windows:
   shell_command_before:
     - command -v virtualenv >/dev/null 2>&1 || { pip install virtualenv; }
     - '[ -d .env -a -f .env/bin/activate ] && source .env/bin/activate || virtualenv .env'
+    - '[ ! -d .env/build ] || rm -rf .env/build'
   panes:
   - shell_command: 
     - vim
@@ -16,7 +17,6 @@ windows:
   - shell_command: 
     - echo hi
   - shell_command: 
-    - '[ -d .env -a -f .env/bin/activate ] || virtualenv .env'
     - command -v .env/bin/tmuxp >/dev/null 2>&1 || { pip install -e .; }
     - command -v watching_testrunner >/dev/null 2>&1 || { pip install watching_testrunner; }
     - watching_testrunner --basepath ./ --pattern="*.py" 'python run_tests.py'
@@ -29,6 +29,7 @@ windows:
   shell_command_before: 
     - command -v virtualenv >/dev/null 2>&1 || { pip install virtualenv; }
     - '[ -d .env -a -f .env/bin/activate ] && source .env/bin/activate || virtualenv .env'
+    - '[ ! -d .env/build ] || rm -rf .env/build'
     - command -v .env/bin/tmuxp >/dev/null 2>&1 || { pip install -e .; }
     - cd ./doc
   panes: