Doc Updates

docs/source/usage/python.rst

@@ -616,7 +616,6 @@ This module provides elements for the accelerator lattice.
    A custom, linear transport matrix.
 
    The matrix elements :math:`R(i,j)` are indexed beginning with 1, so that :math:`i,j=1,2,3,4,5,6`.
-   The transport matrix :math:`R` is defaulted to the identity matrix, so only matrix entries that differ from that need to be specified.
 
    The matrix :math:`R` multiplies the phase space vector :math:`(x,px,y,py,t,pt)`, where coordinates :math:`(x,y,t)` have units of m
    and momenta :math:`(px,py,pt)` are dimensionless.  So, for example, :math:`R(1,1)` is dimensionless, and :math:`R(1,2)` has units of m.

docs/source/usage/workflows/add_element.rst

@@ -19,7 +19,6 @@ A custom linear element can be provided by specifying the 6x6 linear transport m
 See the :ref:` example <examples-fodo-userdef>` for Python and inputs file syntax to specify a custom linear element.
 
 The matrix elements :math:`R(i,j)` are indexed beginning with 1, so that :math:`i,j=1,2,3,4,5,6`.
-The transport matrix :math:`R` is defaulted to the identity matrix, so only matrix entries that differ from that need to be specified.
 
 The matrix :math:`R` multiplies the phase space vector :math:`(x,px,y,py,t,pt)`, where coordinates :math:`(x,y,t)` have units of m
 and momenta :math:`(px,py,pt)` are dimensionless.  So, for example, :math:`R(1,1)` is dimensionless, and :math:`R(1,2)` has units of m.