treewide: drop nanosleep patches related to uClibc-ng

These all patches were related to uClibc-ng
according to this commit [1]. uClibc-ng was
removed in OpenWrt main repo, so these patches
are not needed anymore. They could not be even
applied by `git am`, so there is difficult to find
who authored it, if it was upstreamed (most likely not).

[1] c1a9e69fef ("libreswan: Replace usleep with nanosleep")
[2] https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=63fb175203bbf3b336804587c2f5b3a2d8132ec1

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

devel/lpc21isp/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=lpc21isp
 PKG_VERSION:=197
-PKG_RELEASE:=6
+PKG_RELEASE:=7
 PKG_LICENSE:=LGPL-3.0-or-later
 PKG_LICENSE_FILES:=README gpl.txt lgpl-3.0.txt
 

devel/lpc21isp/patches/120-nanosleep.patch

@@ -1,12 +0,0 @@
---- a/lpc21isp.c
-+++ b/lpc21isp.c
-@@ -1130,7 +1130,8 @@ void ClearSerialPortBuffers(ISP_ENVIRONM
- */
- void Sleep(unsigned long MilliSeconds)
- {
--    usleep(MilliSeconds*1000); //convert to microseconds
-+    struct timespec m = { MilliSeconds / 1000 , (MilliSeconds % 1000 ) * 1000 * 1000};
-+    nanosleep(&m, &m); //convert to nanoseconds
- }
- #endif // defined COMPILE_FOR_LINUX
-