Merge branch '354-build-system-cleanup-refactor-check-whether-a-variant-has-to-be-built' into 'master'

Resolve "build-system: cleanup, refactor check whether a variant has to be built"

Closes #354

See merge request Pmodules/src!355

(cherry picked from commit 9bdfc49a8c)

b2ec1e46 build-system: cleanup and refactor which variants to build

Co-authored-by: gsell <achim.gsell@psi.ch>

Pmodules/libpbuild.bash

@@ -132,13 +132,6 @@ pbuild.system() {
 }
 readonly -f pbuild.system
 
-declare verbose=''
-pbuild.verbose() {
-        verbose="$1"
-}
-readonly -f pbuild.verbose
-
-
 #******************************************************************************
 #
 # function in the "namespace" (with prefix) 'pbuild::' can be used in