Remove ResponseCache from apache-http

It is not clear why ResponseCache was included: it doesn't
relate to apache-http. Its inclusion causes
obscure problems related to switching over to building
against "core platform API" stubs so it is being removed
here.

Bug: 117169648
Bug: 113148576
Test: build
Change-Id: If2ce6d49b59207254e8217a5d8bfb393bd2e8c92

Android.bp

@@ -1559,7 +1559,6 @@ filegroup {
         "core/java/org/apache/http/params/CoreConnectionPNames.java",
         "core/java/org/apache/http/params/HttpConnectionParams.java",
         "core/java/org/apache/http/params/HttpParams.java",
-        "core/java/android/net/http/HttpResponseCache.java",
         "core/java/android/net/http/SslCertificate.java",
         "core/java/android/net/http/SslError.java",
         "core/java/com/android/internal/util/HexDump.java",