Remove redundant filegroups for last released

prebuilt_apis already defines these filegroups. Remove the manually
curated ones.

Bug: 155197156
Test: m
Change-Id: I3ad701c1e75db8b9972928b4c220ed6766737d66
diff --git a/Android.bp b/Android.bp
index 6d88923..6062f29 100644
--- a/Android.bp
+++ b/Android.bp
@@ -35,50 +35,6 @@
 }
 
 genrule {
-    name: "last-released-public-api",
-    srcs: [
-        "*/public/api/android.txt",
-    ],
-    cmd: "cp -f $$(echo $(in) | tr \" \" \"\\n\" | sort -t/ -k3 -n | tail -1) $(genDir)/last-released-api.txt",
-    out: [
-        "last-released-api.txt",
-    ],
-}
-
-genrule {
-    name: "last-released-system-api",
-    srcs: [
-        "*/system/api/android.txt",
-    ],
-    cmd: "cp -f $$(echo $(in) | tr \" \" \"\\n\" | sort -t/ -k3 -n | tail -1) $(genDir)/last-released-api.txt",
-    out: [
-        "last-released-api.txt",
-    ],
-}
-
-genrule {
-    name: "last-released-module-lib-api",
-    srcs: [
-        "*/module-lib/api/android.txt",
-    ],
-    cmd: "cp -f $$(echo $(in) | tr \" \" \"\\n\" | sort -t/ -k3 -n | tail -1) $(genDir)/last-released-api.txt",
-    out: [
-        "last-released-api.txt",
-    ],
-}
-
-genrule {
-    name: "last-released-system-server-api",
-    srcs: [
-        "*/system-server/api/android.txt",
-    ],
-    cmd: "cp -f $$(echo $(in) | tr \" \" \"\\n\" | sort -t/ -k3 -n | tail -1) $(genDir)/last-released-api.txt",
-    out: [
-        "last-released-api.txt",
-    ],
-}
-
-genrule {
     name: "public-api-incompatibilities-with-last-released",
     srcs: [
         "*/public/api/incompatibilities.txt",