The watermark note in front of the IDEA method?

if a method is defined in the figure, a comment like a watermark automatically appears in front of it. Where can I get rid of it?

system parameters are as follows

IntelliJ IDEA 2018.1.3 (Ultimate Edition)
Build -sharpIU-181.4892.42, built on May 8, 2018
JRE: 1.8.0_152-release-1136-b38 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Windows 10 10.0
Jan.10,2022

as shown in the picture, just uncheck the corresponding box.

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