Update spelling.ignore-words

Removed ba, inflight, keypair and warmup.
Added incomin found in optionsdialog.ui:345 and re-use found in utxo_snapshot.cpp

Author: l0rinc

test/lint/spelling.ignore-words.txt

@@ -1,7 +1,6 @@
 afile
 amountIn
 asend
-ba
 blockin
 bu
 cachable
@@ -13,14 +12,14 @@ fo
 fpr
 hashIn
 hights
-inflight
+incomin
 invokable
-keypair
 lief
 mor
 nd
 nin
 outIn
+re-use
 requestor
 ser
 siz
@@ -29,5 +28,4 @@ unparseable
 unser
 useable
 viewIn
-warmup
-wit
+wit