Misc simplifications

[dhalperi]

• Shortcut expensive comparator for self-comparison.
• Objects.equals(NotNull, NotNull) -> a.equals(b)
• Box less

[batfish-bot]

This change is 

[dhalperi]

Last one for now, all in separate commits.

[progwriter]

Reviewed 11 of 11 files at r1.
Reviewable status: complete! all files reviewed, all discussions resolved

[codecov]

Codecov Report

Merging #3766 into master will decrease coverage by <.01%.
The diff coverage is 95.23%.

@@             Coverage Diff              @@
##             master    #3766      +/-   ##
============================================
- Coverage     73.63%   73.63%   -0.01%     
+ Complexity    24060    24057       -3     
============================================
  Files          2047     2047              
  Lines         98852    98851       -1     
  Branches      11916    11914       -2     
============================================
- Hits          72790    72786       -4     
- Misses        20710    20711       +1     
- Partials       5352     5354       +2

Impacted Files	Coverage Δ	Complexity Δ
...ain/java/org/batfish/datamodel/AnnotatedRoute.java	51.85% <0%> (ø)	9 <0> (ø)	⬇️
.../org/batfish/dataplane/rib/RouteAdvertisement.java	92.85% <100%> (ø)	15 <0> (ø)	⬇️
...src/main/java/org/batfish/datamodel/Interface.java	78.84% <100%> (ø)	199 <0> (ø)	⬇️
...tfish/datamodel/collections/NodeInterfacePair.java	90.9% <100%> (-0.4%)	13 <0> (ø)
...rc/main/java/org/batfish/datamodel/IpWildcard.java	91.42% <100%> (ø)	34 <1> (ø)	⬇️
...java/org/batfish/datamodel/OspfIntraAreaRoute.java	84.61% <100%> (-0.57%)	18 <0> (ø)
...main/java/org/batfish/datamodel/AbstractRoute.java	88.23% <100%> (+0.73%)	12 <3> (+1)	⬆️
...g/batfish/datamodel/ospf/OspfNeighborConfigId.java	87.5% <100%> (ø)	16 <0> (ø)	⬇️
...java/org/batfish/datamodel/OspfInterAreaRoute.java	80.76% <100%> (ø)	17 <0> (ø)	⬇️
.../java/org/batfish/datamodel/ospf/OspfTopology.java	96% <100%> (ø)	17 <0> (ø)	⬇️
... and 7 more