Remove APIs deprecated since 0.12 from reef-common: EvaluatorRequest

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lang/java/reef-common/src/main/java/org/apache/reef/driver/evaluator/EvaluatorRequest.java:45:  @Deprecated
lang/java/reef-common/src/main/java/org/apache/reef/driver/evaluator/EvaluatorRequest.java-46-  private final ResourceCatalog.Descriptor descriptor;
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lang/java/reef-common/src/main/java/org/apache/reef/driver/evaluator/EvaluatorRequest.java:58:  @Deprecated
lang/java/reef-common/src/main/java/org/apache/reef/driver/evaluator/EvaluatorRequest.java-59-  EvaluatorRequest(final int number,
lang/java/reef-common/src/main/java/org/apache/reef/driver/evaluator/EvaluatorRequest.java-60-                   final int megaBytes,
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lang/java/reef-common/src/main/java/org/apache/reef/driver/evaluator/EvaluatorRequest.java:122:  @Deprecated
lang/java/reef-common/src/main/java/org/apache/reef/driver/evaluator/EvaluatorRequest.java-123-  public ResourceCatalog.Descriptor getDescriptor() {
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lang/java/reef-common/src/main/java/org/apache/reef/driver/evaluator/EvaluatorRequest.java:159:    @Deprecated
lang/java/reef-common/src/main/java/org/apache/reef/driver/evaluator/EvaluatorRequest.java-160-    private ResourceCatalog.Descriptor descriptor = null;
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lang/java/reef-common/src/main/java/org/apache/reef/driver/evaluator/EvaluatorRequest.java:264:    @Deprecated
lang/java/reef-common/src/main/java/org/apache/reef/driver/evaluator/EvaluatorRequest.java-265-    public Builder fromDescriptor(final ResourceCatalog.Descriptor rd) {