[SCB-2633] Remove unused gmaven plugin (#3183)

diff --git a/pom.xml b/pom.xml
index c493f88..2d12a3e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -50,7 +50,6 @@
     <dependency-check-maven-plugin.version>7.1.1</dependency-check-maven-plugin.version>
     <docker-maven-plugin.version>0.40.1</docker-maven-plugin.version>
     <exec-maven-plugin.version>3.0.0</exec-maven-plugin.version>
-    <gmaven-plugin.version>1.5</gmaven-plugin.version>
     <gpg-maven-plugin.version>3.0.1</gpg-maven-plugin.version>
     <lifecycle-mapping-plugin.version>1.0.0</lifecycle-mapping-plugin.version>
     <jacoco-maven-plugin.version>0.8.8</jacoco-maven-plugin.version>
@@ -354,11 +353,6 @@
           <version>${docker-maven-plugin.version}</version>
         </plugin>
         <plugin>
-          <groupId>org.codehaus.gmaven</groupId>
-          <artifactId>gmaven-plugin</artifactId>
-          <version>${gmaven-plugin.version}</version>
-        </plugin>
-        <plugin>
           <groupId>org.jacoco</groupId>
           <artifactId>jacoco-maven-plugin</artifactId>
           <version>${jacoco-maven-plugin.version}</version>