maint: Remove simple "Adapted-By:" lines from code base. * __ftp__.cc, urlwrite.cc, lin2mu.m, mu2lin.m, bincoeff.m, common_size.m, nextpow2.m, shift.m, xor.m, griddata.m, colormap.m, gray.m, gray2ind.m, image.m, imagesc.m, imshow.m, ind2gray.m, ind2rgb.m, ocean.m, rgb2ind.m, findstr.m, commutation_matrix.m, cross.m, gls.m, isdefinite.m, ishermitian.m, issymmetric.m, null.m, ols.m, orth.m, qzhess.m, vech.m, orderfields.m, untar.m, unzip.m, orient.m, __pltopt__.m, __gnuplot_print__.m, subplot.m, compan.m, conv.m, deconv.m, poly.m, polyder.m, polyfit.m, polyint.m, polyreduce.m, polyval.m, polyvalm.m, residue.m, roots.m, detrend.m, fftconv.m, fftfilt.m, fftshift.m, ifftshift.m, beta.m, lcm.m, pow2.m, corr.m, kurtosis.m, skewness.m, base2dec.m, bin2dec.m, blanks.m, deblank.m, dec2base.m, dec2bin.m, dec2hex.m, hex2dec.m, index.m, rindex.m, substr.m, calendar.m, datestr.m, datevec.m, eomday.m, now.m, weekday.m: Remove simple "Adapted-By:" lines from code base.

--- a/scripts/plot/util/__pltopt__.m	Tue Jan 21 13:06:02 2020 -0800
+++ b/scripts/plot/util/__pltopt__.m	Tue Jan 21 13:15:15 2020 -0800
@@ -116,7 +116,6 @@
 ## Really decode plot option strings.
 
 ## Author: Rick Niles <niles@axp745.gsfc.nasa.gov>
-## Adapted-By: jwe
 ## Maintainer: jwe
 
 function [options, valid] = __pltopt1__ (caller, opt, err_on_invalid)