I'm trying to get rid of the ubuntu1604 and _nojava platforms on Bazel CI.

Do you think it's OK to "test" this project on ubuntu2004 only for Linux? It doesn't seem to actually test much anyway.

PiperOrigin-RevId: 382391968
Change-Id: I56a87076479c6f24abecdea210a88f0572fbf1fa
diff --git a/.bazelci/presubmit.yml b/.bazelci/presubmit.yml
index d529df1..c5d5168 100644
--- a/.bazelci/presubmit.yml
+++ b/.bazelci/presubmit.yml
@@ -1,19 +1,11 @@
 ---
 tasks:
-  ubuntu1604:
+  ubuntu2004:
     build_targets:
-    - "..."
-  ubuntu1804:
-    build_targets:
-    - "..."
-  ubuntu1804_nojava:
-    build_flags:
-    - "--javabase=@openjdk11_linux_archive//:runtime"
-    build_targets:
-    - "..."
+    - "//..."
   macos:
     build_targets:
-    - "..."
+    - "//..."
   windows:
     build_targets:
-    - "..."
+    - "//..."