[style] Remove local figsize adjustments from all lecture files (#574)

* Initial plan

* Remove all local figsize settings from 28 lecture files

Co-authored-by: mmcky <8263752+mmcky@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: mmcky <8263752+mmcky@users.noreply.github.com>

Author: Copilot

lectures/aiyagari.md

@@ -57,7 +57,6 @@ Let's start with some imports:
 
 ```{code-cell} ipython3
 import matplotlib.pyplot as plt
-plt.rcParams["figure.figsize"] = (11, 5)  #set default figure size
 import numpy as np
 from quantecon.markov import DiscreteDP
 from numba import jit

lectures/cake_eating_problem.md

@@ -41,7 +41,6 @@ In what follows, we require the following imports:
 
 ```{code-cell} ipython
 import matplotlib.pyplot as plt
-plt.rcParams["figure.figsize"] = (11, 5)  #set default figure size
 import numpy as np
 ```
 

lectures/career.md

@@ -48,7 +48,6 @@ We begin with some imports:
 
 ```{code-cell} ipython
 import matplotlib.pyplot as plt
-plt.rcParams["figure.figsize"] = (11, 5)  #set default figure size
 import numpy as np
 import quantecon as qe
 from numba import jit, prange

lectures/cass_koopmans_2.md

@@ -67,7 +67,6 @@ Let's start with some standard imports:
 
 ```{code-cell} ipython
 import matplotlib.pyplot as plt
-plt.rcParams["figure.figsize"] = (11, 5)  #set default figure size
 from numba import jit, float64
 from numba.experimental import jitclass
 import numpy as np

lectures/exchangeable.md

@@ -71,7 +71,6 @@ Let’s start with some imports:
 tags: [hide-output]
 ---
 import matplotlib.pyplot as plt
-plt.rcParams["figure.figsize"] = (11, 5)  #set default figure size
 from numba import jit, vectorize
 from math import gamma
 import scipy.optimize as op

lectures/finite_markov.md

@@ -53,7 +53,6 @@ Let's start with some standard imports:
 
 ```{code-cell} ipython
 import matplotlib.pyplot as plt
-plt.rcParams["figure.figsize"] = (11, 5)  #set default figure size
 import quantecon as qe
 import numpy as np
 from mpl_toolkits.mplot3d import Axes3D

lectures/inventory_dynamics.md

@@ -48,7 +48,6 @@ Let's start with some imports
 
 ```{code-cell} ipython3
 import matplotlib.pyplot as plt
-plt.rcParams["figure.figsize"] = (11, 5)  #set default figure size
 import numpy as np
 from numba import jit, float64, prange
 from numba.experimental import jitclass

lectures/lake_model.md

@@ -69,7 +69,6 @@ Let's start with some imports:
 
 ```{code-cell} ipython
 import matplotlib.pyplot as plt
-plt.rcParams["figure.figsize"] = (11, 5)  #set default figure size
 import numpy as np
 from quantecon import MarkovChain
 from scipy.stats import norm

lectures/likelihood_bayes.md

@@ -52,7 +52,6 @@ We'll begin by loading some Python modules.
 :hide-output: false
 
 import matplotlib.pyplot as plt
-plt.rcParams["figure.figsize"] = (11, 5)  #set default figure size
 import numpy as np
 from numba import vectorize, jit, prange
 from math import gamma

lectures/linear_algebra.md

@@ -74,7 +74,6 @@ Let's start with some imports:
 
 ```{code-cell} ipython
 import matplotlib.pyplot as plt
-plt.rcParams["figure.figsize"] = (11, 5)  #set default figure size
 import numpy as np
 from matplotlib import cm
 from mpl_toolkits.mplot3d import Axes3D