remove the self-Import of gson.annotations

based on google#2725 and bndtools/bnd#6220 (comment)
append -noimport:=true to all exports which we do not want to re-import
This avoids issues in OSGi environments where multiple versions of gson are deployed and com.google.gson.annotations causes wiring conflicts between these different versions

gson/pom.xml

@@ -147,7 +147,7 @@
 
                 -exportcontents:\
                     com.google.gson,\
-                    com.google.gson.annotations,\
+                    com.google.gson.annotations;-noimport:=true,\
                     com.google.gson.reflect,\
                     com.google.gson.stream
               ]]></bnd>

gson/src/test/java/com/google/gson/regression/OSGiTest.java

@@ -34,9 +34,9 @@ public void testComGoogleGsonAnnotationsPackage() throws Exception {
     Manifest mf = findManifest("com.google.gson");
     String importPkg = mf.getMainAttributes().getValue("Import-Package");
     assertWithMessage("Import-Package statement is there").that(importPkg).isNotNull();
-    assertWithMessage("There should be com.google.gson.annotations dependency")
+    assertWithMessage("There should be no com.google.gson.annotations dependency")
         .that(importPkg)
-        .contains("com.google.gson.annotations");
+        .doesNotContain("com.google.gson.annotations");
   }
 
   @Test