RFR(XXS): 8068231: Several tests are still excluded

[Pavel Chistyakov]

Hi all,

could you please take a look into this extra small change:
Test compiler/loopopts/7052494/Test7052494.java is removed from exclude 
list (removed @ignore tag)

webrev: http://cr.openjdk.java.net/~pchistyakov/8068231/webrev.00/ 
<http://cr.openjdk.java.net/%7Epchistyakov/8068231/webrev.00/>
JBS: https://bugs.openjdk.java.net/browse/JDK-8068231

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Thanks,
Pavel