dartc Eclipse projects no longer need these two source dirs.

compiler/eclipse.workspace/dartc/.classpath

Index: compiler/eclipse.workspace/dartc/.classpath
diff --git a/compiler/eclipse.workspace/dartc/.classpath b/compiler/eclipse.workspace/dartc/.classpath
index 7d1580931de9c23ff313b29cbe1f1143770c0ab3..30fd5cfb0a859a9123e14046939dbd4a42cf728c 100644
--- a/compiler/eclipse.workspace/dartc/.classpath
+++ b/compiler/eclipse.workspace/dartc/.classpath
@@ -1,8 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
 	<classpathentry kind="src" path="src"/>
-	<classpathentry kind="src" path="dartc.corelib"/>
-	<classpathentry kind="src" path="shared.corelib"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry kind="var" path="DART_TRUNK/third_party/args4j/2.0.12/args4j-2.0.12.jar" sourcepath="/DART_TRUNK/third_party/args4j/2.0.12/args4j-2.0.12-src.jar"/>
 	<classpathentry kind="var" path="DART_TRUNK/third_party/guava/r09/guava-r09.jar" sourcepath="/DART_TRUNK/third_party/guava/r09/guava-src-r09.zip"/>
@@ -10,7 +8,7 @@
 	<classpathentry kind="var" path="DART_TRUNK/third_party/hamcrest/v1_3/hamcrest-generator-1.3.0RC2.jar"/>
 	<classpathentry kind="var" path="DART_TRUNK/third_party/hamcrest/v1_3/hamcrest-integration-1.3.0RC2.jar"/>
 	<classpathentry kind="var" path="DART_TRUNK/third_party/hamcrest/v1_3/hamcrest-library-1.3.0RC2.jar"/>
- 	<classpathentry kind="var" path="DART_TRUNK/third_party/json/r2_20080312/json.jar"/>
+	<classpathentry kind="var" path="DART_TRUNK/third_party/json/r2_20080312/json.jar"/>
 	<classpathentry kind="var" path="DART_TRUNK/third_party/junit/v4_8_2/junit.jar" sourcepath="/DART_TRUNK/third_party/junit/v4_8_2/junit-src.jar"/>
 	<classpathentry kind="output" path="output"/>
 </classpath>