Remove duplicate entries and links in CHANGELOG.md

Author: xterao

CHANGELOG.md

@@ -2,49 +2,6 @@
 
 ## [Unreleased]
 
-## [0.3.1] - 2025-03-11
-
-### Bug Fixes
-
-- Fix: Reference checks for repeated elements in the for directive do not work correctly ([#20])
-- Fix: element type condition checking in DAO argument usage check. ([#21])
-
-### Maintenance
-
-- Fix:Release draft generation is delegated to release-drafter ([#35])
-- Add: Update CHANGELOG.md Action ([#34])
-- Fix: release-raft should only be run on the main branch ([#26])
-- Add Develop Build Number ([#25])
-
-### Dependency Updates
-
-- Revert "Update dependency org.seasar.doma:doma-core to v3.5.1" ([#22])
-- Fix: IntelliJ Platform version upgrades ([#27])
-- Update dependency org.jetbrains.intellij.platform to v2.3.0 ([#10])
-- Change the library version upgrade settings ([#24])
-- Update dependency gradle to v8.13 ([#9])
-- Update dependency ubuntu to v24 ([#12])
-- Update dependency org.seasar.doma:doma-core to v3.5.1 ([#11])
-- Update dependency org.slf4j:slf4j-api to v2.0.17 ([#8])
-- Update dependency ch.qos.logback:logback-classic to v1.5.17 ([#7])
-
-[#20]:https://github.com/domaframework/doma-tools-for-intellij/pull/20
-[#21]:https://github.com/domaframework/doma-tools-for-intellij/pull/21
-[#35]:https://github.com/domaframework/doma-tools-for-intellij/pull/35
-[#34]:https://github.com/domaframework/doma-tools-for-intellij/pull/34
-[#26]:https://github.com/domaframework/doma-tools-for-intellij/pull/26
-[#25]:https://github.com/domaframework/doma-tools-for-intellij/pull/25
-[#22]:https://github.com/domaframework/doma-tools-for-intellij/pull/22
-[#27]:https://github.com/domaframework/doma-tools-for-intellij/pull/27
-[#10]:https://github.com/domaframework/doma-tools-for-intellij/pull/10
-[#24]:https://github.com/domaframework/doma-tools-for-intellij/pull/24
-[#9]:https://github.com/domaframework/doma-tools-for-intellij/pull/9
-[#12]:https://github.com/domaframework/doma-tools-for-intellij/pull/12
-[#11]:https://github.com/domaframework/doma-tools-for-intellij/pull/11
-[#8]:https://github.com/domaframework/doma-tools-for-intellij/pull/8
-[#7]:https://github.com/domaframework/doma-tools-for-intellij/pull/7
-
-
 ## [0.3.1] - 2025-03-11
 
 ### Bug Fixes