.tmuxp.{json,yaml}: Remove shell_command_before (noisy, unused)

Author: tony

.tmuxp.json

@@ -1,9 +1,6 @@
 {
   "session_name": "tmuxp",
   "start_directory": "./",
-  "shell_command_before": [
-    "[ -f .venv/bin/activate ] && source .venv/bin/activate && reset"
-  ],
   "windows": [
     {
       "window_name": "tmuxp",

.tmuxp.yaml

@@ -1,7 +1,5 @@
 session_name: tmuxp
 start_directory: ./ # load session relative to config location (project root).
-shell_command_before:
-- '[ -f .venv/bin/activate ] && source .venv/bin/activate && reset'
 windows:
 - window_name: tmuxp
   focus: True