docs: remove IPFS_BOOTSTRAP ref from README (#1745)

It doesn't look like the IPFS_BOOTSTRAP env var
does anything these days, so this PR removes it
from the README and the DOCKERFILE

License: MIT
Signed-off-by: Oli Evans <oli@tableflip.io>

Dockerfile

@@ -4,7 +4,6 @@ WORKDIR /usr/src/app
 COPY . /usr/src/app
 
 ENV IPFS_WRTC_LINUX_WINDOWS=1
-ENV IPFS_BOOTSTRAP=1
 ENV IPFS_MONITORING=1
 ENV IPFS_PATH=/root/.jsipfs
 ENV IPFS_API_HOST=0.0.0.0

README.md

@@ -11,7 +11,7 @@
   <a href="http://ipfs.io/"><img src="https://img.shields.io/badge/project-IPFS-blue.svg?style=flat" /></a>
   <a href="http://webchat.freenode.net/?channels=%23ipfs"><img src="https://img.shields.io/badge/freenode-%23ipfs-blue.svg?style=flat" /></a>
   <a href="https://github.com/ipfs/team-mgmt/blob/master/MGMT_JS_CORE_DEV.md"><img src="https://img.shields.io/badge/team-mgmt-blue.svg?style=flat" /></a>
-  <br> 
+  <br>
   <a href="https://github.com/ipfs/interface-ipfs-core"><img src="https://img.shields.io/badge/interface--ipfs--core-API%20Docs-blue.svg"></a>
   <a href="https://github.com/ipfs/interface-ipfs-core/issues/55"><img src="https://img.shields.io/badge/interface--ipfs--core-Updates-blue.svg"></a>
 </p>
@@ -182,8 +182,6 @@ Commands:
 - default repo location: `~/.jsipfs` (can be changed with env variable `IPFS_PATH`)
 - default swarm port: `4002`
 - default API port: `5002`
-- default Bootstrap is off, to enable it set `IPFS_BOOTSTRAP=1`
-
 
 ### IPFS Daemon