cleanup deprecated unused code

plexus-compiler-api/src/main/java/org/codehaus/plexus/compiler/AbstractCompiler.java

@@ -82,13 +82,6 @@ public CompilerResult performCompile(CompilerConfiguration configuration)
         throw new CompilerNotImplementedException("The performCompile method has not been implemented.");
     }
 
-    @Deprecated
-    public List<CompilerError> compile(CompilerConfiguration configuration)
-            throws CompilerException
-    {
-        throw new CompilerNotImplementedException("The compile method has not been implemented.");
-    }
-
     public CompilerOutputStyle getCompilerOutputStyle()
     {
         return compilerOutputStyle;
@@ -285,23 +278,6 @@ private static String getCanonicalPath( File origFile )
         }
     }
 
-    /**
-     * @deprecated use (String[]) arguments.toArray( new String[ arguments.size() ] ); instead
-     */
-    protected static String[] toStringArray( List<String> arguments )
-    {
-        String[] args = new String[arguments.size()];
-
-        int argLength = arguments.size();
-
-        for ( int i = 0; i < argLength; i++ )
-        {
-            args[i] = arguments.get( i );
-        }
-
-        return args;
-    }
-
     protected void logCompiling( String[] sourceFiles, CompilerConfiguration config )
     {
         if ( ( getLogger() != null ) && getLogger().isInfoEnabled() )

plexus-compiler-api/src/main/java/org/codehaus/plexus/compiler/Compiler.java

@@ -63,19 +63,6 @@ boolean canUpdateTarget( CompilerConfiguration configuration )
     CompilerResult performCompile( CompilerConfiguration configuration )
         throws CompilerException;
 
-    /**
-     * This method is provided for backwards compatibility only. Clients should
-     * use {@link #performCompile(CompilerConfiguration)} instead.
-     * 
-     * @param configuration   the configuration description of the compilation
-     *   to perform
-     * @return the result of the compilation returned by the language processor
-     * @throws CompilerException
-     */
-    @Deprecated
-    List<CompilerError> compile( CompilerConfiguration configuration )
-            throws CompilerException;
-
     /**
      * Create the command line that would be executed using this configuration.
      * If this particular compiler has no concept of a command line then returns

plexus-compiler-api/src/main/java/org/codehaus/plexus/compiler/CompilerConfiguration.java

@@ -472,31 +472,6 @@ public void addCompilerCustomArgument( String customArgument, String value )
         customCompilerArguments.add( new AbstractMap.SimpleImmutableEntry<>( customArgument, value ) );
     }
 
-    /**
-     * @deprecated will be removed in 2.X use #getCustomCompilerArgumentsAsMap
-     * @return
-     */
-    @Deprecated
-    public LinkedHashMap<String, String> getCustomCompilerArguments()
-    {
-        LinkedHashMap<String, String> arguments = new LinkedHashMap<>( customCompilerArguments.size() );
-        for ( Map.Entry<String, String> entry : customCompilerArguments )
-        {
-            arguments.put( entry.getKey(), entry.getValue() );
-        }
-        return arguments;
-    }
-
-    /**
-     * @deprecated will be removed in 2.X use #setCustomCompilerArgumentsAsMap
-     * @param customCompilerArguments
-     */
-    @Deprecated
-    public void setCustomCompilerArguments( LinkedHashMap<String, String> customCompilerArguments )
-    {
-        setCustomCompilerArgumentsAsMap( customCompilerArguments );
-    }
-
     /**
      * Get all unique argument keys and their value. In case of duplicate keys, last one added wins.
      *

plexus-compilers/plexus-compiler-csharp/src/main/java/org/codehaus/plexus/compiler/csharp/CSharpCompiler.java

@@ -645,18 +645,6 @@ protected static String[] getSourceFiles( CompilerConfiguration config )
         return result;
     }
 
-    /**
-     * This method is just here to maintain the public api. This is now handled in the parse
-     * compiler output function.
-     *
-     * @author Chris Stevenson
-     * @deprecated
-     */
-    public static CompilerMessage parseLine( String line )
-    {
-        return DefaultCSharpCompilerParser.parseLine( line );
-    }
-
     protected static Set<String> getSourceFilesForSourceRoot( CompilerConfiguration config, String sourceLocation )
     {
         DirectoryScanner scanner = new DirectoryScanner();

plexus-compilers/plexus-compiler-eclipse/src/main/java/org/codehaus/plexus/compiler/eclipse/EclipseJavaCompiler.java

@@ -377,10 +377,6 @@ public void report( Diagnostic<? extends JavaFileObject> diagnostic )
                     args.add( errorF.toString() );
                     args.addAll( allSources );
 
-                    String to = ( config.getWorkingDirectory() == null ) ? config.getOutputLocation() :
-                        config.getWorkingDirectory().toPath().relativize( new File( config.getOutputLocation() ).toPath() ).toString();
-                    getLogger().info( "Compiling with " + config.describe( "eclipse" ) +
-                            " to " + to );
                     getLogger().debug( "ecj command line: " + args );
 
                     success = BatchCompiler.compile( args.toArray( new String[args.size()] ), devNull, devNull,