Remove quotes from 'IS_COPY_MODE' and 'ANOMALY_TIMES'. (thulab#481)

Author: YangYumings

core/src/main/java/cn/edu/tsinghua/iot/benchmark/conf/Config.java

@@ -1755,14 +1755,12 @@ public String toInfoText() {
         + '\''
         + "\nIS_COPY_MODE="
         + IS_COPY_MODE
-        + '\''
         + "\nIS_ADD_ANOMALY="
         + IS_ADD_ANOMALY
         + "\nANOMALY_RATE="
         + ANOMALY_RATE
         + "\nANOMALY_TIMES="
         + ANOMALY_TIMES
-        + '\''
         + "\nIS_OUT_OF_ORDER="
         + IS_OUT_OF_ORDER
         + "\nOUT_OF_ORDER_MODE="