diff --git a/src/vs/editor/common/core/lineTokens.ts b/src/vs/editor/common/core/lineTokens.ts
index 713efdf9bc3..4833bab6090 100644
--- a/src/vs/editor/common/core/lineTokens.ts
+++ b/src/vs/editor/common/core/lineTokens.ts
@@ -113,31 +113,6 @@ export class LineTokens {
 		return this._textLength;
 	}
 
-	public equals(other: LineTokens): boolean {
-		if (!(other instanceof LineTokens)) {
-			return false;
-		}
-		if (this._text !== other._text) {
-			return false;
-		}
-		if (this._map !== other._map) {
-			return false;
-		}
-		if (!ModeTransition.equals(this.modeTransitions, other.modeTransitions)) {
-			return false;
-		}
-
-		if (this._tokens.length !== other._tokens.length) {
-			return false;
-		}
-		for (let i = 0, len = this._tokens.length; i < len; i++) {
-			if (this._tokens[i] !== other._tokens[i]) {
-				return false;
-			}
-		}
-		return true;
-	}
-
 	/**
 	 * Find the token containing offset `offset`.
 	 *    For example, with the following tokens [0, 5), [5, 9), [9, infinity)
diff --git a/src/vs/editor/common/modes/supports/electricCharacter.ts b/src/vs/editor/common/modes/supports/electricCharacter.ts
index 6a1af419501..bf7b6084a81 100644
--- a/src/vs/editor/common/modes/supports/electricCharacter.ts
+++ b/src/vs/editor/common/modes/supports/electricCharacter.ts
@@ -21,7 +21,6 @@ export interface IDocComment {
 
 export interface IBracketElectricCharacterContribution {
 	docComment?: IDocComment;
-	embeddedElectricCharacters?: string[];
 }
 
 export class BracketElectricCharacterSupport {
@@ -35,9 +34,6 @@ export class BracketElectricCharacterSupport {
 	}
 
 	public getElectricCharacters(): string[] {
-		if (Array.isArray(this.contribution.embeddedElectricCharacters)) {
-			return this.contribution.embeddedElectricCharacters.concat(this.brackets.getElectricCharacters());
-		}
 		return this.brackets.getElectricCharacters();
 	}
 
diff --git a/src/vs/monaco.d.ts b/src/vs/monaco.d.ts
index 0329b1eb5c0..986df4374af 100644
--- a/src/vs/monaco.d.ts
+++ b/src/vs/monaco.d.ts
@@ -4173,7 +4173,6 @@ declare module monaco.languages {
 
     export interface IBracketElectricCharacterContribution {
         docComment?: IDocComment;
-        embeddedElectricCharacters?: string[];
     }
 
     /**