function isDeclarationNotSafeToRemove(nextToken, prevToken) {
				return (
					nextToken.type === "String" ||
					(prevToken &&
						!astUtils.isSemicolonToken(prevToken) &&
						!astUtils.isOpeningBraceToken(prevToken))
				);
			}
Check whether declaration is safe to remove or not
@param {ASTNode} nextToken next token of unused variable
@param {ASTNode} prevToken previous token of unused variable
@returns {boolean} true if declaration is not safe to remove