fix(windows): rip out unused submodule support in installer & docker & docs

we have no submodules anymore, so #37702 was kinda right, but we can just delete it entirely.

website/docs/getting-started/termux.md

@@ -80,16 +80,10 @@ Why these packages?
 ### 2. Clone Hermes
 
 ```bash
-git clone --recurse-submodules https://github.com/NousResearch/hermes-agent.git
+git clone https://github.com/NousResearch/hermes-agent.git
 cd hermes-agent
 ```
 
-If you already cloned without submodules:
-
-```bash
-git submodule update --init --recursive
-```
-
 ### 3. Create a virtual environment
 
 ```bash

website/docs/getting-started/updating.md

@@ -195,7 +195,6 @@ git log --oneline -10
 
 # Roll back to a specific commit
 git checkout <commit-hash>
-git submodule update --init --recursive
 uv pip install -e ".[all]"
 
 # Restart the gateway if running
@@ -206,7 +205,6 @@ To roll back to a specific release tag (substitute your previous tag — e.g. a
 
 ```bash
 git checkout vX.Y.Z
-git submodule update --init --recursive
 uv pip install -e ".[all]"
 ```