Remove duplicate declarations

This causes 'redefinition of typedef ...' errors on GCC 4.5.3
3 jobs for milloni-ct/gcc-4.5
Status Job ID Name Coverage
  Preparation
failed #55851
manifest

 
  Build
skipped #55852
build fedora x86_64
 
  Full Builds
skipped #55853
build android arm64 api28
 
Name Stage Failure
failed
manifest Preparation There has been a timeout failure or the job got stuck. Check your timeout limits or try again
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