adjusted uninstall output

Author: vlada-shubina

docs/core/install/templates.md

@@ -82,8 +82,6 @@ The `{folder-path}` specified on the command becomes the template package identi
 
 ```console
 dotnet new uninstall
-Template Instantiation Commands for .NET CLI
-
 Currently installed items:
 
 ... cut to save space ...
@@ -102,8 +100,6 @@ Currently installed items:
 
 ```console
 dotnet new uninstall
-Template Instantiation Commands for .NET CLI
-
 Currently installed items:
 
 ... cut to save space ...
@@ -160,8 +156,6 @@ By using the standard uninstall command without a package identifier, you can se
 
 ```console
 dotnet new uninstall
-Template Instantiation Commands for .NET CLI
-
 Currently installed items:
 
 ... cut to save space ...

docs/core/tools/custom-templates.md

@@ -204,8 +204,6 @@ dotnet new uninstall
 That command returns something similar to the following output:
 
 ```console
-Template Instantiation Commands for .NET CLI
-
 Currently installed items:
    Microsoft.Azure.WebJobs.ProjectTemplates
       Version: 4.0.1942

docs/core/tutorials/cli-templates-create-template-package.md

@@ -162,9 +162,6 @@ No matter how you installed the template package, either with the _.nupkg_ file
 
 ```dotnetcli
 C:\working> dotnet new uninstall
-
-Template Instantiation Commands for .NET CLI
-
 Currently installed items:
 ... cut to save space ...