Remove remnants of planners in scripts (#841)

### Motivation and Context
There is some dead code related to planners in scripts

### Description
Remove dead code

### Contribution Checklist
- [ ] The code builds clean without any errors or warnings
- [ ] The PR follows the [Contribution
Guidelines](https://github.com/microsoft/chat-copilot/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/chat-copilot/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [ ] All unit tests pass, and I have added new tests where possible

scripts/.env

@@ -2,9 +2,7 @@
 
 # Default values
 ENV_COMPLETION_MODEL_OPEN_AI="gpt-3.5-turbo"
-ENV_PLANNER_MODEL_OPEN_AI="gpt-3.5-turbo"
 ENV_COMPLETION_MODEL_AZURE_OPEN_AI="gpt-35-turbo"
-ENV_PLANNER_MODEL_AZURE_OPEN_AI="gpt-35-turbo"
 ENV_EMBEDDING_MODEL="text-embedding-ada-002"
 ENV_ASPNETCORE="Development"
 ENV_INSTANCE="https://login.microsoftonline.com"

scripts/Configure.ps1

@@ -3,7 +3,7 @@
 Configure user secrets, appsettings.Development.json, and webapp/.env for Chat Copilot.
 
 .PARAMETER AIService
-The service type used: OpenAI or Azure OpenAI.
+The service type used: OpenAI or AzureOpenAI.
 
 .PARAMETER APIKey
 The API key for the AI service.
@@ -17,9 +17,6 @@ The chat completion model to use (e.g., gpt-3.5-turbo or gpt-4).
 .PARAMETER EmbeddingModel
 The embedding model to use (e.g., text-embedding-ada-002).
 
-.PARAMETER PlannerModel
-The chat completion model to use for planning (e.g., gpt-3.5-turbo or gpt-4).
-
 .PARAMETER FrontendClientId
 The client (application) ID associated with your frontend's AAD app registration.
 
@@ -51,9 +48,6 @@ param(
     [Parameter(Mandatory = $false)]
     [string]$EmbeddingModel, 
 
-    [Parameter(Mandatory = $false)]
-    [string]$PlannerModel,
-
     [Parameter(Mandatory = $false)]
     [string] $FrontendClientId,
 
@@ -74,21 +68,17 @@ $varScriptFilePath = Join-Path "$PSScriptRoot" 'Variables.ps1'
 # Set remaining values from Variables.ps1
 if ($AIService -eq $varOpenAI) {
     if (!$CompletionModel) {
+        Write-Host "No completion model provided - Defaulting to $varCompletionModelOpenAI"
         $CompletionModel = $varCompletionModelOpenAI
     }
-    if (!$PlannerModel) {
-        $PlannerModel = $varPlannerModelOpenAI
-    }
 
     # TO DO: Validate model values if set by command line.
 }
 elseif ($AIService -eq $varAzureOpenAI) {
     if (!$CompletionModel) {
+        Write-Host "No completion model provided - Defaulting to $varCompletionModelAzureOpenAI"
         $CompletionModel = $varCompletionModelAzureOpenAI
     }
-    if (!$PlannerModel) {
-        $PlannerModel = $varPlannerModelAzureOpenAI
-    }
 
     # TO DO: Validate model values if set by command line.
 
@@ -177,9 +167,6 @@ $appsettingsOverrides = @{
             Scopes   = $varScopes
         }
     };
-    Planner = @{
-        Model = $PlannerModel
-    };
     KernelMemory = @{
         TextGeneratorType = $AIService;
         DataIngestion     = @{

scripts/Variables.ps1

@@ -2,9 +2,7 @@
 
 # Default values
 $varCompletionModelOpenAI = "gpt-3.5-turbo"
-$varPlannerModelOpenAI = "gpt-3.5-turbo"
 $varCompletionModelAzureOpenAI = "gpt-35-turbo"
-$varPlannerModelAzureOpenAI = "gpt-35-turbo"
 $varEmbeddingModel = "text-embedding-ada-002"
 $varASPNetCore = "Development"
 $varInstance = "https://login.microsoftonline.com"

scripts/configure.sh

@@ -37,11 +37,6 @@ while [[ $# -gt 0 ]]; do
     shift
     shift
     ;;
-  --plannermodel)
-    PLANNER_MODEL="$2"
-    shift
-    shift
-    ;;
   -fc | --frontend-clientid)
     FRONTEND_CLIENT_ID="$2"
     shift
@@ -111,17 +106,11 @@ if [ "$AI_SERVICE" = "$ENV_OPEN_AI" ]; then
   if [ -z "$COMPLETION_MODEL" ]; then
     COMPLETION_MODEL="$ENV_COMPLETION_MODEL_OPEN_AI"
   fi
-  if [ -z "$PLANNER_MODEL" ]; then
-    PLANNER_MODEL="$ENV_PLANNER_MODEL_OPEN_AI"
-  fi
   # TO DO: Validate model values if set by command line.
 else # elif [ "$AI_SERVICE" = "$ENV_AZURE_OPEN_AI" ]; then
   if [ -z "$COMPLETION_MODEL" ]; then
     COMPLETION_MODEL="$ENV_COMPLETION_MODEL_AZURE_OPEN_AI"
   fi
-  if [ -z "$PLANNER_MODEL" ]; then
-    PLANNER_MODEL="$ENV_PLANNER_MODEL_AZURE_OPEN_AI"
-  fi
   # TO DO: Validate model values if set by command line.
 fi
 
@@ -194,9 +183,6 @@ APPSETTINGS_OVERRIDES="{
       \"Scopes\": \"${ENV_SCOPES}\"
     }
   },
-  \"Planner\": {
-    \"Model\": \"${PLANNER_MODEL}\"
-  },
   \"KernelMemory\": {
     \"TextGeneratorType\": \"${AI_SERVICE}\",
     \"DataIngestion\": {