Remove theme cli doc from build-overview

Author: ryyppy

pages/docs/manual/latest/build-overview.mdx

@@ -9,18 +9,6 @@ canonical: "/docs/manual/latest/build-overview"
 
 ReScript comes with a build system, bsb, that's meant to be fast, lean and used as the authoritative build system of the community.
 
-Bsb provides a few templates to quickly start a new project:
-
-```sh
-bsb -init my-directory-name
-```
-
-Feel free to inspect the various files in the newly generated directory. To see all the templates available, do:
-
-```sh
-bsb -themes
-```
-
 The build description file is called `bsconfig.json`. Every ReScript project needs one.
 
 **To build a project**, run: