.wxs only two file not getting deleted on uninstall - wix3.5

Question

I am using wix installer for msi.
i am using default UI
<UIRef Id="WixUI_Minimal"/>
There are somany dll i am using for msi package. on installation all dll will be installed at
C:\Program Files (x86)\MyApp
while on uninstall all dll uninstalled or deleted except two dll
libssl-1_1.dll
libcrypto-1_1.dll
I found that identifier '-' is making problem on uninstalling and not getting deleted.
I tried custom action like this for deleting that folder itself, but it didn't work.
<Directory Id='TARGETDIR' Name='SourceDir'>
<Directory Id="ALLUSERSPROFILE" SourceName="All Users" />
<Directory Id='ProgramFilesFolder' SourceName="program files">
<Directory Id="INSTALLDIR" Name="MyApp" >
<Component Id="First.dll" Guid="GUID">
<File Id="first.dll" Name="first.dll" KeyPath="yes" Vital="no" Source="$(var.PATH)\first.dll" />
</Component>
....... All dll component place like above ......
</Directory>
</Directory>
</Directory>
<Property Id="INSTALLDIR">
<RegistrySearch Root="HKLM" Key="SOFTWARE\MyProj\MyApp" Type="raw" Id="APPLICATIONFOLDER_REGSEARCH" Name="Path" />
</Property>
<DirectoryRef Id='INSTALLDIR'>
<Component Id="UninstallFolder" Guid="*">
<CreateFolder Directory="INSTALLDIR"/>
<util:RemoveFolderEx Property="INSTALLDIR" On="uninstall"/>
<RemoveFolder Id="INSTALLDIR" On="uninstall"/>
<RegistryValue Root="HKLM" Key="SOFTWARE\MyProj\MyApp" Name="path" Type="string" Value="[ProgramFilesFolder]MyApp " KeyPath="yes"/>
</Component>
</DirectoryRef>