remove unused semicolons

[arnkore]

Ⅰ. Describe what this PR did

remove unused semicolons

Ⅱ. Does this pull request fix one issue?

fixes #540

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-io]

Codecov Report

Merging #1190 into develop will increase coverage by 0.02%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             develop    #1190      +/-   ##
=============================================
+ Coverage      43.51%   43.54%   +0.02%     
  Complexity      1428     1428              
=============================================
  Files            250      250              
  Lines          10208    10208              
  Branches        1330     1330              
=============================================
+ Hits            4442     4445       +3     
+ Misses          5181     5179       -2     
+ Partials         585      584       -1

Impacted Files	Coverage Δ	Complexity Δ
...in/java/io/seata/server/session/SessionHolder.java	53.16% <ø> (ø)	15 <0> (ø)	⬇️
...server/store/file/FileTransactionStoreManager.java	47.03% <0%> (+1.04%)	19% <0%> (ø)	⬇️

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[slievrly]

@arnkore please associate with your github email.

[leizhiyuan]

LGTM，

[xingfudeshi]

LGTM

[slievrly]

LGTM