Remove D8 and JS compiling cruft from dartc eclipse config

compiler/eclipse.workspace/README.txt

 This is an Eclipse workspace for Helios Service Release 2.
 
 HOW TO
 
 1. When you open Eclipse the first time, it will ask you to create a
    workspace or select an existing one. You can use this directory as
    workspace, or you can choose a different one.
 
 2. If you're already using Eclipse, you can either switch to a new
    workspace (File > Switch Workspace) or use your current workspace.
 
 3. Add the following "Path Variable" to your workspace:
    (Open Preferences... > General > Workspace > Linked Resources)
    DART_TRUNK: point to the root of your checkout
-   D8_EXEC: for example DART_TRUNK/compiler/out/Debug_dartc/d8
-            or on a mac DART_TRUNK/compiler/xcodebuild/Debug_dashc/d8
   
 
 4. Add a "Classpath Variable" to your workspace called DART_TRUNK
    that points to the same directory as your DART_TRUNK path variable.
    (Open Preferences... > Java > Build Path > Classpath Variables).
 
 5. Regardless if you're using this directory as a workspace, you have
    to import the projects (File > Import... > General > Existing
    Projects into Workspace).
 
 6. Click "Next >"
 
 7. Select root directory. Browse to: compiler/eclipse.workspace.
 
 8. It should find and select two projects (dartc and tests).
 
 9. Click Finish. (At this point Eclipse may get stuck, if so, exit
    Eclipse by right-clicking on the dock icon, and restart).
 
-10. Repeat steps 5-9, to import the project in third_party/closure-compiler-src
-
-11. Open the "build.xml" file in the "closure-compiler-src" project.
-
-12. In the Outline view, right-click on the "jar [default]" target, and select
-    "Run as..." > "Ant Build". (This will build its version of Rhino and JarJar 
-    it).
-
-13. Open Preferences... > Java > Compiler > Errors/Warnings > Potential
+10. Open Preferences... > Java > Compiler > Errors/Warnings > Potential
     programming problems. Change "Serializable class without
     serialVersionUID" to "Ignore".
 
-14. Import the launch configuration (File > Import... > Run/Debug >
+11. Import the launch configuration (File > Import... > Run/Debug >
     Launch Configurations).
 
-15. Click "Next >"
+12. Click "Next >"
 
-16. In SVN, browse to: compiler/eclipse.workspace/tests.
+13. In SVN, browse to: compiler/eclipse.workspace/tests.
 
-17. Select "tests".
+14. Select "tests".
 
-18. Click Finish.
+15. Click Finish.
 
-19. Try running the tests: Run > Run History > dartc test suites.
+16. Try running the tests: Run > Run History > dartc test suites.