Remove support for generating versioned snapshots

Previously, the code for selecting specific versions of sdk snapshots
was removed (along with the uses_sdks property). That makes versioned
snapshots useless so this change removes all the code and tests that
generated those versioned snapshots.

Bug: 232546567
Test: m nothing
      packages/modules/common/build/mainline_modules_sdks.sh
Change-Id: Ib6d1b72bc8399fbb39075494ae37da92f4b28d03
diff --git a/sdk/exports_test.go b/sdk/exports_test.go
index 17ddf17..2605fd1 100644
--- a/sdk/exports_test.go
+++ b/sdk/exports_test.go
@@ -43,7 +43,7 @@
 		})
 
 	CheckSnapshot(t, result, "myexports", "package",
-		checkUnversionedAndroidBpContents(`
+		checkAndroidBpContents(`
 // This is auto-generated. DO NOT EDIT.
 
 java_import {
@@ -54,22 +54,5 @@
     jars: ["java/myjavalib.jar"],
 }
 `),
-		checkVersionedAndroidBpContents(`
-// This is auto-generated. DO NOT EDIT.
-
-java_import {
-    name: "myexports_myjavalib@current",
-    sdk_member_name: "myjavalib",
-    visibility: ["//visibility:public"],
-    apex_available: ["//apex_available:platform"],
-    jars: ["java/myjavalib.jar"],
-}
-
-module_exports_snapshot {
-    name: "myexports@current",
-    visibility: ["//visibility:public"],
-    java_libs: ["myexports_myjavalib@current"],
-}
-`),
 	)
 }