Remove support for generating versioned snapshots

(cherry picked from commit b01ac4b6ba)

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
Merged-In: Ib6d1b72bc8399fbb39075494ae37da92f4b28d03

sdk/compat_config_sdk_test.go

@@ -37,23 +37,7 @@ func TestSnapshotWithCompatConfig(t *testing.T) {
 	`)
 
 	CheckSnapshot(t, result, "mysdk", "",
-		checkVersionedAndroidBpContents(`
-// This is auto-generated. DO NOT EDIT.
-
-prebuilt_platform_compat_config {
-    name: "mysdk_myconfig@current",
-    sdk_member_name: "myconfig",
-    visibility: ["//visibility:public"],
-    metadata: "compat_configs/myconfig/myconfig_meta.xml",
-}
-
-sdk_snapshot {
-    name: "mysdk@current",
-    visibility: ["//visibility:public"],
-    compat_configs: ["mysdk_myconfig@current"],
-}
-`),
-		checkUnversionedAndroidBpContents(`
+		checkAndroidBpContents(`
 // This is auto-generated. DO NOT EDIT.
 
 prebuilt_platform_compat_config {