Remove '-tags "integration"' from build (#8383)

This was used to gate support for FAKECLOCK, which is now removed.

Note this is distinct from `go test -tags integration`.

Followup to #8356

Author: jsha

test/integration/pausing_test.go

@@ -45,7 +45,10 @@ func TestIdentifiersPausedForAccount(t *testing.T) {
 		},
 		tlsConf,
 		metrics.NoopRegisterer,
-		clock.NewFake(),
+		// We're calling the integration test SA, which uses a real clock.
+		// We need to use a real clock here too, or the SA will reject the
+		// request as having the wrong time attached.
+		clock.New(),
 	)
 	cmd.FailOnError(err, "Failed to load credentials and create gRPC connection to SA")
 	saClient := sapb.NewStorageAuthorityClient(saConn)

test/startservers.py

@@ -185,7 +185,7 @@ def install(race_detection, coverage=False):
     # Pass empty BUILD_TIME and BUILD_ID flags to avoid constantly invalidating the
     # build cache with new BUILD_TIMEs, or invalidating it on merges with a new
     # BUILD_ID.
-    go_build_flags='-tags "integration"'
+    go_build_flags=''
     if race_detection:
         go_build_flags += ' -race'