Remove .(ll)ndk suffix from (ll)ndk_library

Soong handles these automatically now.

Bug: 33241851
Test: Android-aosp_arm.mk is the same before/after
Test: build.ninja is the same before/after
Test: build-aosp_arm.ninja is the same before/after
Merged-In: Ia904a2351d6a25df5e6254560a84323ed6d69f96
Change-Id: Ia904a2351d6a25df5e6254560a84323ed6d69f96
diff --git a/Android.bp b/Android.bp
index 2a0028c..a73f091 100644
--- a/Android.bp
+++ b/Android.bp
@@ -119,7 +119,7 @@
 // }
 
 ndk_library {
-    name: "libz.ndk",
+    name: "libz",
     symbol_file: "libz.map.txt",
     first_version: "9",
     unversioned_until: "current",