Use merge_zips instead of ziptime for resetting timestamps in jacoco outputs

ziptime doesn't support ZIP64 so it is limited to 65535 entries in
a zip file.  Use the newly added support in merge_zips to reset the
timestamp instead.

Bug: 308765940
Test: builds
Change-Id: I7bc4d8d4943e7417af1783a63ac5b5904d2aa751

java/jacoco.go

@@ -34,13 +34,11 @@ var (
 			`${config.Zip2ZipCmd} -i $in -o $strippedJar $stripSpec && ` +
 			`${config.JavaCmd} ${config.JavaVmFlags} -jar ${config.JacocoCLIJar} ` +
 			`  instrument --quiet --dest $tmpDir $strippedJar && ` +
-			`${config.Ziptime} $tmpJar && ` +
 			`${config.MergeZipsCmd} --ignore-duplicates -j $out $tmpJar $in`,
 		CommandDeps: []string{
 			"${config.Zip2ZipCmd}",
 			"${config.JavaCmd}",
 			"${config.JacocoCLIJar}",
-			"${config.Ziptime}",
 			"${config.MergeZipsCmd}",
 		},
 	},