Removes libgcc_eh hack (XCC)

For some reason, we used to need to have a fake .a file sitting around.
Either because of recent changes, or maybe the crosstool-like changes
from last year, we no longer need the hack.

Hooray!

You probably don't need to rebuild the toolchain.

tools/compilers/gcc-glibc/Makefile

diff --git a/tools/compilers/gcc-glibc/Makefile b/tools/compilers/gcc-glibc/Makefile
index 105e97c..2a4b74c 100644
--- a/tools/compilers/gcc-glibc/Makefile
+++ b/tools/compilers/gcc-glibc/Makefile
@@ -403,10 +403,8 @@
 #################################
 .$(BINARY_PREFIX)dummy-libs-install:
 	rm -rf $(SYSROOT)/usr/lib/libparlib.a
-	rm -rf $(SYSROOT)/usr/lib/libgcc_eh.a
 	mkdir -p $(SYSROOT)/usr/lib
 	$(ARCH)-ucb-akaros-ar cr $(SYSROOT)/usr/lib/libparlib.a
-	$(ARCH)-ucb-akaros-ar cr $(SYSROOT)/usr/lib/libgcc_eh.a
 
 #################################
 ######### Glibc Stage 1 #########