Remove obsolete environment variables from ninja.go allowlist.

Test: N/A.
Change-Id: I717b31f2b68d2cac72cca33f04cfa3b6078cb8eb
diff --git a/ui/build/ninja.go b/ui/build/ninja.go
index ffd1ab9..7799766 100644
--- a/ui/build/ninja.go
+++ b/ui/build/ninja.go
@@ -139,15 +139,6 @@
 			// b/147197813 - used by art-check-debug-apex-gen
 			"EMMA_INSTRUMENT_FRAMEWORK",
 
-			// Goma -- gomacc may not need all of these
-			"GOMA_DIR",
-			"GOMA_DISABLED",
-			"GOMA_FAIL_FAST",
-			"GOMA_FALLBACK",
-			"GOMA_GCE_SERVICE_ACCOUNT",
-			"GOMA_TMP_DIR",
-			"GOMA_USE_LOCAL",
-
 			// RBE client
 			"RBE_compare",
 			"RBE_exec_root",