[gcalctool] Drop an unused patch

[Kalev Lember]

commit 8a214857a54e17305e2f05e68bcd864baadb2d79
Author: Kalev Lember <kalevlember at gmail.com>
Date:   Tue Apr 17 14:16:41 2012 +0300

    Drop an unused patch

 0001-Fix-linking-against-libm.patch |   31 -------------------------------
 1 files changed, 0 insertions(+), 31 deletions(-)