Lot of JRE and tomcat directories on Domain Manager. Could some directories be deleted ?

Products

• CA Client Automation - IT Client Manager
• CA Client Automation

Issue/Introduction

On Domain Manager under directory C:\Program Files (x86)\CA\SC\JRE and C:\Program Files (x86)\CA\SC\Tomcat there are lot of directories for different versions of JRE and tomcat.
Could old versions be deleted ?

Example :

C:\Program Files (x86)\CA\SC\JRE\1.7.0_17
C:\Program Files (x86)\CA\SC\JRE\1.7.0_67
C:\Program Files (x86)\CA\SC\JRE\1.8.0_92
C:\Program Files (x86)\CA\SC\JRE\1.8.0_212

C:\Program Files (x86)\CA\SC\Tomcat\7.0.40
C:\Program Files (x86)\CA\SC\Tomcat\7.0.54
C:\Program Files (x86)\CA\SC\Tomcat\8.5.6
C:\Program Files (x86)\CA\SC\Tomcat\8.5.56
C:\Program Files (x86)\CA\SC\Tomcat\9.0.105

Environment

Client Automation - All Versions

Cause

Here are the JRE and tomcat versions installed per Client Automation versions 

12.8
C:\Program Files (x86)\CA\SC\JRE\1.7.0_17
C:\Program Files (x86)\CA\SC\Tomcat\7.0.40

12.9
C:\Program Files (x86)\CA\SC\JRE\1.7.0_67
C:\Program Files (x86)\CA\SC\Tomcat\7.0.54

14.0
C:\Program Files (x86)\CA\SC\JRE\1.8.0_60
C:\Program Files (x86)\CA\SC\Tomcat\8.0.26

14.0 SP1
C:\Program Files (x86)\CA\SC\JRE\1.8.0_60
C:\Program Files (x86)\CA\SC\Tomcat\8.0.26

14.0 SP2
C:\Program Files (x86)\CA\SC\JRE\1.8.0_92
C:\Program Files (x86)\CA\SC\Tomcat\8.5.6

14.0 SP3
C:\Program Files (x86)\CA\SC\JRE\1.8.0_212
C:\Program Files (x86)\CA\SC\Tomcat\8.5.6

14.5
C:\Program Files (x86)\CA\SC\JRE\1.8.0_212
C:\Program Files (x86)\CA\SC\Tomcat\8.5.56

14.6
C:\Program Files (x86)\CA\SC\JRE\1.8.0_212
C:\Program Files (x86)\CA\SC\Tomcat\9.0.105

Resolution

Yes old JRE and tomcat directory versions could be deleted on Domain Manager

For example if Domain Manager is upgraded to version 14.6, only these directories are used :

C:\Program Files (x86)\CA\SC\JRE\1.8.0_212
C:\Program Files (x86)\CA\SC\Tomcat\9.0.105

all others older JRE and tomcat versions could be deleted