chore(curriculum): remove video from Regular Expressions lectures (#61552)

curriculum/challenges/english/25-front-end-development/lecture-working-with-regular-expressions/6733aad43b3ebff588a26fb5.md

@@ -1,18 +1,12 @@
 ---
 id: 6733aad43b3ebff588a26fb5
 title: What Are Regular Expressions, and What Are Some Common Methods?
-challengeType: 11
-videoId: PIsbrPU_eqo
+challengeType: 19
 dashedName: what-are-regular-expressions-and-what-are-some-common-methods
 ---
 
 # --description--
 
-Watch the video or read the transcript and answer the questions below.
-
-# --transcript--
-
-What are regular expressions, and what are some common methods?
 
 Regular expressions, or regex, are a feature supported by many different programming languages.
 

curriculum/challenges/english/25-front-end-development/lecture-working-with-regular-expressions/6733c5ba834ded4bb067e67c.md

@@ -1,19 +1,12 @@
 ---
 id: 6733c5ba834ded4bb067e67c
 title: What Are Some Common Regular Expression Modifiers Used for Searching?
-challengeType: 11
-videoId: 0ZGj-WNbB98
+challengeType: 19
 dashedName: what-are-some-common-regular-expression-modifiers-used-for-searching
 ---
 
 # --description--
 
-Watch the video or read the transcript and answer the questions below.
-
-# --transcript--
-
-What are some common regular expression modifiers used for searching?
-
 Modifiers, often referred to as "flags", modify the behavior of a regular expression. Let's recall our example from an earlier lecture:
 
 ```js

curriculum/challenges/english/25-front-end-development/lecture-working-with-regular-expressions/6733c5c549775c4be710237c.md

@@ -1,19 +1,12 @@
 ---
 id: 6733c5c549775c4be710237c
 title: How Can You Match and Replace All Occurrences in a String?
-challengeType: 11
-videoId: HyuDs-jVJyw
+challengeType: 19
 dashedName: how-can-you-match-and-replace-all-occurrences-in-a-string
 ---
 
 # --description--
 
-Watch the video or read the transcript and answer the questions below.
-
-# --transcript--
-
-How can you match or replace all occurrences in a string?
-
 Let's learn how to match or replace all occurrences of a pattern in a string.
 
 You have previously learned about the `replace()` and `match()` methods, as well as the global `g` modifier. Now you can combine that knowledge to handle all patterns in a string. Let's recall our original match code:

curriculum/challenges/english/25-front-end-development/lecture-working-with-regular-expressions/6733c5d0048bb74c18431296.md

@@ -1,19 +1,12 @@
 ---
 id: 6733c5d0048bb74c18431296
 title: What Are Character Classes, and What Are Some Common Examples?
-challengeType: 11
-videoId: lWqPXb--fWA
+challengeType: 19
 dashedName: what-are-character-classes-and-what-are-some-common-examples
 ---
 
 # --description--
 
-Watch the video or read the transcript and answer the questions below.
-
-# --transcript--
-
-What are character classes, and what are some common examples?
-
 Let's learn about character classes in regular expressions, including some common examples.
 
 Character classes are a special syntax you can use to match sets or subsets of characters.

curriculum/challenges/english/25-front-end-development/lecture-working-with-regular-expressions/6733c5dc74176e4c496d09e6.md

@@ -1,19 +1,12 @@
 ---
 id: 6733c5dc74176e4c496d09e6
 title: What Are Lookahead and Lookbehind Assertions, and How Do They Work?
-challengeType: 11
-videoId: U-XnBty3JOo
+challengeType: 19
 dashedName: what-are-lookaheads-and-lookbehind-assertions-and-how-do-they-work
 ---
 
 # --description--
 
-Watch the video or read the transcript and answer the questions below.
-
-# --transcript--
-
-What are lookahead and lookbehind assertions, and how do they work?
-
 Let's learn about lookahead and lookbehind assertions in regular expressions.
 
 Lookahead and lookbehind assertions allow you to match specific patterns based on the presence or lack of surrounding patterns. There are four variations of these assertions.

curriculum/challenges/english/25-front-end-development/lecture-working-with-regular-expressions/6733c5e54e3a154c8078ed48.md

@@ -1,19 +1,12 @@
 ---
 id: 6733c5e54e3a154c8078ed48
 title: What Are Regex Quantifiers, and How Do They Work?
-challengeType: 11
-videoId: 6m2-cgKXpj0
+challengeType: 19
 dashedName: what-are-regex-quantifiers-and-how-do-they-work
 ---
 
 # --description--
 
-Watch the video or read the transcript and answer the questions below.
-
-# --transcript--
-
-What are regex quantifiers, and how do they work?
-
 Let's learn about quantifiers in regular expressions.
 
 Consider a scenario where you want to match a four-digit identification code. You know you can use the `\d` character class, so you might write that four times. And to avoid any extraneous characters, you'd include both the start and end anchors:

curriculum/challenges/english/25-front-end-development/lecture-working-with-regular-expressions/6733c5f20cc9584cada942a4.md

@@ -1,19 +1,12 @@
 ---
 id: 6733c5f20cc9584cada942a4
 title: What Are Capturing Groups and Backreferences, and How Do They Work?
-challengeType: 11
-videoId: cplXWWLO9Ic
+challengeType: 19
 dashedName: what-are-capturing-groups-and-backreferences-and-how-do-they-work
 ---
 
 # --description--
 
-Watch the video or read the transcript and answer the questions below.
-
-# --transcript--
-
-What are capturing groups and backreferences, and how do they work?
-
 Let's learn about capturing groups and backreferences in regular expressions.
 
 A capturing group allows you to "capture" a portion of the matched string to use however you might need. Capturing groups are defined by parentheses containing the pattern to capture, with no leading characters like a lookahead.