Remove vestigial declarations.

Source/cmLocalUnixMakefileGenerator3.h

@@ -19,7 +19,6 @@
 
 class cmCustomCommand;
 class cmCustomCommandGenerator;
-class cmDependInformation;
 class cmDepends;
 class cmMakefileTargetGenerator;
 class cmTarget;

Source/cmMakefile.h

@@ -41,7 +41,6 @@
 class cmFunctionBlocker;
 class cmCommand;
 class cmInstallGenerator;
-class cmMakeDepend;
 class cmSourceFile;
 class cmTest;
 class cmTestGenerator;
@@ -856,9 +855,6 @@ private:
   bool EnforceUniqueDir(const std::string& srcPath,
                         const std::string& binPath) const;
 
-  friend class cmMakeDepend;    // make depend needs direct access
-                                // to the Sources array
-
   typedef std::vector<cmFunctionBlocker*> FunctionBlockersType;
   FunctionBlockersType FunctionBlockers;
   std::vector<FunctionBlockersType::size_type> FunctionBlockerBarriers;

Source/cmMakefileTargetGenerator.h

@@ -18,7 +18,6 @@
 #include "cmOSXBundleGenerator.h"
 
 class cmCustomCommandGenerator;
-class cmDependInformation;
 class cmDepends;
 class cmGeneratorTarget;
 class cmGeneratedFileStream;