Remove use of exec-maven-plugin

mockito-core.pom

@@ -90,26 +90,6 @@
           </execution>
         </executions>
       </plugin>
-      <plugin>
-        <groupId>org.codehaus.mojo</groupId>
-        <artifactId>exec-maven-plugin</artifactId>
-        <version>1.6.0</version>
-        <executions>
-          <execution>
-            <phase>process-classes</phase>
-            <goals>
-              <goal>exec</goal>
-            </goals>
-          </execution>
-        </executions>
-        <configuration>
-          <executable>cp</executable>
-          <arguments>
-            <argument>${project.build.sourceDirectory}/org/mockito/internal/creation/bytebuddy/inject/MockMethodDispatcher.class</argument>
-            <argument>${project.build.outputDirectory}/org/mockito/internal/creation/bytebuddy/inject/MockMethodDispatcher.raw</argument>
-          </arguments>
-	</configuration>
-      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>

mockito.spec

@@ -23,7 +23,6 @@ BuildRequires:  mvn(net.bytebuddy:byte-buddy)
 BuildRequires:  mvn(net.bytebuddy:byte-buddy-agent)
 BuildRequires:  mvn(org.apache.felix:maven-bundle-plugin)
 BuildRequires:  mvn(org.assertj:assertj-core)
-BuildRequires:  mvn(org.codehaus.mojo:exec-maven-plugin)
 BuildRequires:  mvn(org.hamcrest:hamcrest)
 BuildRequires:  mvn(org.objenesis:objenesis)
 BuildRequires:  mvn(org.opentest4j:opentest4j)
@@ -63,7 +62,9 @@ EOF
 
 %build
 # See the usage of exec-maven-plugin in the pom
-javac src/main/java/org/mockito/internal/creation/bytebuddy/inject/MockMethodDispatcher.java
+mkdir -p target/classes/
+javac -d target/classes/ src/main/java/org/mockito/internal/creation/bytebuddy/inject/MockMethodDispatcher.java
+mv target/classes/org/mockito/internal/creation/bytebuddy/inject/MockMethodDispatcher.{class,raw}
 
 %mvn_build -- -Dproject.build.sourceEncoding=UTF-8