Enable E2E tests on linux presubmit

This will now run the E2E tests for the linux presubmit target.

Bug: 250954910
Change-Id: Iaa4dd7c36a4b4255b7d4a526f79409d89185efad
diff --git a/servers/build_tools.py b/servers/build_tools.py
index 42c148c..b864150 100755
--- a/servers/build_tools.py
+++ b/servers/build_tools.py
@@ -165,11 +165,8 @@
         run(launcher + cmd, cfg.get_env(), "bld")
 
         # Let's run the e2e tests.
-        if (
-            False
-            and presubmit  # We disable the IntegrationTests due to stability issues.
+        if (presubmit  # We disable the IntegrationTests due to stability issues.
             and target == "linux"
-            and not args.gfxstream
             and not args.gfxstream_only
         ):
             run(launcher + cmd + ["--task", "IntegrationTest"], cfg.get_env(), "tst")