Don't require JavaInfo in java_single_jar.deps

Support for files was partially added in unknown commit, this is pre-work for unknown commit

Startblock:
  * BTRGuardian allows unknown commit
PiperOrigin-RevId: 582691673
Change-Id: I8e71c06bf2da218a142882be594fdcb605de9455

Author: cushon

java/java_single_jar.bzl

@@ -73,7 +73,6 @@ def _java_single_jar(ctx):
 java_single_jar = rule(
     attrs = {
         "deps": attr.label_list(
-            providers = [JavaInfo],
             allow_files = True,
             doc = """
                 The Java targets (including java_import and java_library) to collect