Remove empty target

This target does not glob anything and can be removed

Closes bazelbuild#16535.

PiperOrigin-RevId: 483501106
Change-Id: I3b146c01c4f90411ea4f4cfea4c57d5423150c34

Author: limdor

src/test/java/com/google/devtools/build/android/r8/BUILD

@@ -50,7 +50,6 @@ java_test(
     data = [
         ":arithmetic",
         ":barray",
-        ":dexmergersample",
         ":naming001",
         ":twosimpleclasses",
     ],
@@ -104,13 +103,3 @@ java_library(
         "-target 8",
     ],
 )
-
-java_library(
-    name = "dexmergersample",
-    srcs = glob(["testdata/dexmergersample/*.java"]),
-    # Must be compiled as java8, otherwise CompatDx complains about invoke-customs
-    javacopts = [
-        "-source 8",
-        "-target 8",
-    ],
-)