Clean up markdown cell separators in mccall_risk

Author: mmcky

lectures/mccall_risk.md

@@ -358,8 +358,6 @@ This is why the valuation of the random payoff goes down.
 ```{solution-end}
 ```
 
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 ## Back to Job Search
 
 In the lecture {doc}`mccall_fitted_vfi` we studied a job search model with
@@ -637,8 +635,6 @@ The reason is that a more risk-averse agent values the certain income from emplo
 
 Therefore, they are willing to accept lower wages to escape unemployment.
 
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 ```{exercise}
 :label: mcr_ex1
 
@@ -650,8 +646,6 @@ the reservation wage varies with $\theta$.
 You can use code for simulation from {doc}`mccall_fitted_vfi`, suitably modified.
 ```
 
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 ```{solution-start} mcr_ex1
 :class: dropdown
 ```
@@ -783,7 +777,5 @@ so they accept a wider range of job offers.
 
 As a result, they spend less time unemployed searching for better opportunities
 
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 ```{solution-end}
 ```