bamboo runs maven plugin even after removal from pom

[Gnanasekaran Sakthivel]

I had this error in the first place. I found this plugin mentioned in the pom.xml, i removed the plugin from the pom, committed, pushed, merged, etc..
I see that bamboo is correctly picking up the commit equal to my branch.
This build agent is to do the Release build
Then I ran the bamboo process. it still has this problem.
following is the extract from the log

build 08-Jul-2020 17:25:37 [INFO] --- findbugs-maven-plugin:3.0.0:findbugs (findbugs) @ abc-project ---

build 08-Jul-2020 17:25:38 [INFO] Document Management Interface ..... FAILURE [ 2.522 s]

...

build 08-Jul-2020 17:25:38 [ERROR] Failed to execute goal org.codehaus.mojo:findbugs-maven-plugin:3.0.0:findbugs (findbugs) on project mlodoc-project: Unable to parse configuration of mojo org.codehaus.mojo:findbugs-maven-plugin:3.0.0:findbugs for parameter pluginArtifacts: Cannot assign configuration entry 'pluginArtifacts' with value '${plugin.artifacts}' of type java.util.Collections.UnmodifiableRandomAccessList to property of type java.util.ArrayList -> [Help 1]