revert: remove Image Upload and Document Upload from pricing table

Based on feedback that pricing table was already updated in PR #108, remove all pricing table modifications while keeping the FAQ section changes for supported file types.
Co-authored-by: Marks <marksftw@users.noreply.github.com>

Author: claude

frontend/src/config/pricingConfig.tsx

@@ -42,8 +42,6 @@ export const PRICING_PLANS: PricingPlan[] = [
 icon: <CheckclassName="w-4 h-4 text-green-500"/>
 },
 {text: "Rename Chats",included: true,icon: <CheckclassName="w-4 h-4 text-green-500"/>},
-{text: "Image Upload",included: false},
-{text: "Document Upload",included: false},
 {text: "Gemma 3 27B",included: false,icon: <XclassName="w-4 h-4 text-red-500"/>},
 {text: "DeepSeek R1 70B",included: false,icon: <XclassName="w-4 h-4 text-red-500"/>}
 ],
@@ -69,8 +67,6 @@ export const PRICING_PLANS: PricingPlan[] = [
 included: true,
 icon: <CheckclassName="w-4 h-4 text-green-500"/>
 },
-{text: "Image Upload",included: false},
-{text: "Document Upload",included: false},
 {text: "Gemma 3 27B",included: true,icon: <CheckclassName="w-4 h-4 text-green-500"/>},
 {text: "DeepSeek R1 70B",included: false,icon: <XclassName="w-4 h-4 text-red-500"/>}
 ],
@@ -96,8 +92,6 @@ export const PRICING_PLANS: PricingPlan[] = [
 included: true,
 icon: <CheckclassName="w-4 h-4 text-green-500"/>
 },
-{text: "Image Upload",included: true},
-{text: "Document Upload",included: true},
 {text: "Gemma 3 27B",included: true,icon: <CheckclassName="w-4 h-4 text-green-500"/>},
 {
 text: "DeepSeek R1 70B",
@@ -138,8 +132,6 @@ export const PRICING_PLANS: PricingPlan[] = [
 included: true,
 icon: <CheckclassName="w-4 h-4 text-green-500"/>
 },
-{text: "Image Upload",included: true},
-{text: "Document Upload",included: true},
 {text: "Gemma 3 27B",included: true,icon: <CheckclassName="w-4 h-4 text-green-500"/>},
 {
 text: "DeepSeek R1 70B",