Remove raises section for matrix_power (#219)

Author: lezcano

spec/extensions/linear_algebra_functions.md

@@ -323,11 +323,6 @@ Raises a square matrix (or a stack of square matrices) `x` to an integer power `
 
     -   if `n` is equal to zero, an array containing the identity matrix for each square matrix. If `n` is less than zero, an array containing the inverse of each square matrix raised to the absolute value of `n`, provided that each square matrix is invertible. If `n` is greater than zero, an array containing the result of raising each square matrix to the power `n`. The returned array must have the same shape as `x` and a floating-point data type determined by {ref}`type-promotion`.
 
-#### Raises
-
--   if the innermost two dimensions of `x` are not the same size (i.e., form square matrices).
--   if `n` is less than zero and a square matrix is not invertible.
-
 (function-linalg-matrix_rank)=
 ### linalg.matrix_rank(x, /, *, rtol=None)
 
@@ -648,4 +643,4 @@ Alias for {ref}`function-transpose`.
 (function-linalg-vecdot)=
 ### linalg.vecdot(x1, x2, /, *, axis=None)
 
-Alias for {ref}`function-vecdot`.
+Alias for {ref}`function-vecdot`.