Remove bp2build and appurtenances.

Bug: 374816306
Test: treehugger
Change-Id: Ic26f6d6e0772fb07e43d22873519c5afb2ee9a45
diff --git a/ui/build/build.go b/ui/build/build.go
index 28c3284..d5a20b4 100644
--- a/ui/build/build.go
+++ b/ui/build/build.go
@@ -428,7 +428,7 @@
 	if !config.SoongBuildInvocationNeeded() {
 		// This means that the output of soong_build is not needed and thus it would
 		// run unnecessarily. In addition, if this code wasn't there invocations
-		// with only special-cased target names like "m bp2build" would result in
+		// with only special-cased target names would result in
 		// passing Ninja the empty target list and it would then build the default
 		// targets which is not what the user asked for.
 		what = what &^ RunNinja