CFE-2703: Removing undeclared references

[eli-taft-quoin]

This pull request is to fix the following bug found when running make install.

$ make install
Making install in libcompat
Making install in libutils
Making install in libcfnet
Making install in libenv
Making install in libpromises
YACC cf3parse.c
byacc: 1 shift/reduce conflict.
updating cf3parse.h
CC cf3parse.lo
cf3parse.y: In function 'yyparse':
cf3parse.y:496:79: error: 'YYEOF' undeclared (first use in this function)
if (yychar == BUNDLE || yychar == BODY || yychar == YYEOF)
^
cf3parse.y:496:79: note: each undeclared identifier is reported only once for each function it appears in
make[3]: *** [cf3parse.lo] Error 1
make[2]: *** [install] Error 2
make[1]: *** [install-recursive] Error 1
make: *** [install] Error 2

I figured, since it's not declared and not used elsewhere in the file, perhaps it's not needed.

Ticket: https://tracker.mender.io/browse/CFE-2703

[jimis]

YYEOF exists in Bison. I want some verification that it's not really needed, in order to merge this.

EDIT: As I can see, YYEOF is just defined to zero from bison. So maybe the following would resolve the error:

#ifndef YYEOF
# define YYEOF 0
#endif

[jimis]

Try to define YYEOF to zero, if it's not defined. See previous comment.

[jimis]

@basvandervlies if you say that removing YYEOF is good, I'll go ahead and merge as it is.

[jimis]

Discussion in CFE-2703. Merged and cherry-picked to 3.11.x, 3.10.x and 3.7.x. Thanks!