Bazel: Unsign the JGit jars

Now that we use download_file.py anyway, move the unsign part to it.

Change-Id: I139fae87bbe263ac42e75d4706fa28059a53e326

lib/jgit/org.eclipse.jgit.http.server/BUILD

@@ -1,15 +1,7 @@
-load('//tools/bzl:unsign.bzl', 'unsign_jars')
-
 java_library(
-  name = 'jgit-servlet-signed',
+  name = 'jgit-servlet',
   exports = ['@jgit_servlet//jar'],
   runtime_deps = ['//lib/jgit/org.eclipse.jgit:jgit'],
   visibility = ['//visibility:public'],
   data = ['//lib:LICENSE-jgit'],
 )
-
-unsign_jars(
-  name = 'jgit-servlet',
-  deps = [':jgit-servlet-signed'],
-  visibility = ['//visibility:public'],
-)

lib/jgit/org.eclipse.jgit.junit/BUILD

@@ -1,15 +1,7 @@
-load('//tools/bzl:unsign.bzl', 'unsign_jars')
-
 java_library(
-  name = 'junit-signed',
+  name = 'junit',
   exports = ['@jgit_junit//jar'],
   runtime_deps = ['//lib/jgit/org.eclipse.jgit:jgit'],
   visibility = ['//visibility:public'],
   data = ['//lib:LICENSE-DO_NOT_DISTRIBUTE'],
 )
-
-unsign_jars(
-  name = 'junit',
-  deps = [':junit-signed'],
-    visibility = ['//visibility:public'],
-)

lib/jgit/org.eclipse.jgit/BUILD

@@ -1,7 +1,5 @@
-load('//tools/bzl:unsign.bzl', 'unsign_jars')
-
 java_library(
-  name = 'jgit-signed',
+  name = 'jgit',
   exports = ['@jgit//jar'],
   runtime_deps = [':javaewah'],
   visibility = ['//visibility:public'],
@@ -14,9 +12,3 @@ java_library(
   visibility = ['//visibility:public'],
   data = ['//lib:LICENSE-Apache2.0'],
 )
-
-unsign_jars(
-  name = 'jgit',
-  deps = [':jgit-signed'],
-  visibility = ['//visibility:public'],
-)