remove link to outdated documentation

Author: SethTisue

README.md

@@ -8,8 +8,7 @@ refactoring efforts, including carving a monolithic codebase into
 independent subprojects.
 
 The plugin analyzes source code, not generated bytecode. The analysis
-code is the same code used by the incremental compiler in sbt and zinc
-([reference](https://github.com/gkossakowski/sbt/wiki/Incremental-compiler-notes#dependency-extraction)).
+code is based on code from the incremental compiler in sbt and zinc.
 Therefore, the plugin should be an accurate source of information for
 developers looking to reduce dependencies in order to reduce their
 incremental recompile times.