Remove unused private field

Signed-off-by: rfscholte <rfscholte@apache.org>
diff --git a/src/main/java/org/apache/maven/plugin/compiler/TestCompilerMojo.java b/src/main/java/org/apache/maven/plugin/compiler/TestCompilerMojo.java
index f6c1d5b..9430ac2 100644
--- a/src/main/java/org/apache/maven/plugin/compiler/TestCompilerMojo.java
+++ b/src/main/java/org/apache/maven/plugin/compiler/TestCompilerMojo.java
@@ -153,9 +153,6 @@
     @Parameter ( defaultValue = "${project.build.directory}/generated-test-sources/test-annotations" )
     private File generatedTestSourcesDirectory;
 
-    @Parameter( defaultValue = "${project.compileClasspathElements}", readonly = true )
-    private List<String> compilePath;
-
     @Parameter( defaultValue = "${project.testClasspathElements}", readonly = true )
     private List<String> testPath;
 
diff --git a/src/test/java/org/apache/maven/plugin/compiler/CompilerMojoTestCase.java b/src/test/java/org/apache/maven/plugin/compiler/CompilerMojoTestCase.java
index b1282d5..79d8711 100644
--- a/src/test/java/org/apache/maven/plugin/compiler/CompilerMojoTestCase.java
+++ b/src/test/java/org/apache/maven/plugin/compiler/CompilerMojoTestCase.java
@@ -448,7 +448,6 @@
         project.setArtifacts( Collections.singleton( junitArtifact )  );
         project.getBuild().setOutputDirectory( new File( buildDir, "classes" ).getAbsolutePath() );
         setVariableValueToObject( mojo, "project", project );
-        setVariableValueToObject( mojo, "compilePath", Collections.EMPTY_LIST );
         setVariableValueToObject( mojo, "testPath", testClasspathList );
         setVariableValueToObject( mojo, "session", getMockMavenSession() );
         setVariableValueToObject( mojo, "mojoExecution", getMockMojoExecution() );