fix(client): remove notes from certifications (freeCodeCamp#66210)

Author: AdityaSingh-18

client/i18n/locales/english/intro.json

@@ -3420,7 +3420,6 @@
   },
   "front-end-development-libraries-v9": {
     "title": "Front-End Development Libraries Certification",
-    "note": "This certification is currently in development and will be available soon. We recommend completing the available courses below to prepare for the certification exam once it is released.",
     "intro": [
       "This course teaches you the libraries that developers use to build webpages: React, TypeScript, and more.",
       "To earn your Front-End Development Libraries Certification:",
@@ -4511,7 +4510,6 @@
   },
   "back-end-development-and-apis-v9": {
     "title": "Back-End Development and APIs Certification",
-    "note": "This certification is currently in development and will be available soon.",
     "intro": [
       "This course teaches you the fundamentals of back-end development and APIs.",
       "To earn your Back-End Development and APIs Certification:",
@@ -4693,7 +4691,6 @@
   },
   "full-stack-developer-v9": {
     "title": "Certified Full-Stack Developer Curriculum",
-    "note": "If you were previously working through our full-stack curriculum, don't worry - your progress is saved. We split it into smaller certifications for you to earn along your journey. This certification is currently in development and will be available soon. Start earning the required certifications so you're ready when it launches.",
     "intro": [
       "This certification represents the culmination of your full-stack developer journey. It demonstrates your ability to build complete, modern web applications from start to finish.",
       "To qualify for the exam, you must earn the certifications below. Pass the exam to earn your Full-Stack Developer Certification."