[release] CHANGELOG.md: do not highlight dlv-dap yet

We need to do some more polishing.

Change-Id: Ia78d11a59e34ac12c0169401f8b3f76634419170
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/298789
Trust: Hyang-Ah Hana Kim <[email protected]>
Run-TryBot: Hyang-Ah Hana Kim <[email protected]>
Reviewed-by: Polina Sokolova <[email protected]>
TryBot-Result: kokoro <[email protected]>

Author: hyangah

CHANGELOG.md

@@ -1,11 +1,5 @@
 ## v0.23.0 - 4th Mar, 2021
 
-Delve DAP is a new debug adapter embedded in `dlv`, the Go debugger.
-It is written in Go, understands Go's data types and runtime better,
-and is under active development. In this release, we added back
-access to Delve DAP. Delve DAP is still in the experimental stage
-and we appreciate any feedback and bug reports!
-
 A list of all issues and changes can be found in the
 [v0.23.0 milestone](https://github.com/golang/vscode-go/milestone/21?closed=1)
 and the [changes since v0.22.1](https://github.com/golang/vscode-go/compare/v0.22.1...v0.23.0)