dev-util/ninja: remove unused patch(es)

Signed-off-by: Michael Mair-Keimberger <m.mairkeimberger@gmail.com>
Closes: https://github.com/gentoo/gentoo/pull/11274
Signed-off-by: Aaron Bauman <bman@gentoo.org>

dev-util/ninja/files/ninja-uclibc.patch

@@ -1,18 +0,0 @@
-diff --git a/src/util.cc b/src/util.cc
-index e31fd1f..1caa1ce 100644
---- a/src/util.cc
-+++ b/src/util.cc
-@@ -585,6 +585,13 @@ double GetLoadAverage() {
-   // Calculation taken from comment in libperfstats.h
-   return double(cpu_stats.loadavg[0]) / double(1 << SBITS);
- }
-+#elif defined(__UCLIBC__)
-+double GetLoadAverage() {
-+  struct sysinfo si;
-+  if (sysinfo(&si) != 0)
-+    return -0.0f;
-+  return 1.0 / (1 << SI_LOAD_SHIFT) * si.loads[0];
-+}
- #else
- double GetLoadAverage() {
-   double loadavg[3] = { 0.0f, 0.0f, 0.0f };