Remove obsolete --ipc=host Docker workaround (#5844)

Author: MikeMcC399

docs/guides/continuous-integration/introduction.mdx

@@ -541,12 +541,6 @@ See
 for an example that runs the `npx cypress install` command to ensure the Cypress
 binary is always present before the tests begin.
 
-### In Docker
-
-If you are running long runs on Docker, you need to set the `ipc` to `host`
-mode. [This issue](https://github.com/cypress-io/cypress/issues/350) describes
-exactly what to do.
-
 ### Xvfb
 
 When running on Linux, Cypress needs an X11 server; otherwise it spawns its own