drop unnecessary dependency on parent POM

sonatype-oss-parent is marked as deprecated() in fedora

guava.spec

@@ -1,6 +1,6 @@
 Name:           guava
 Version:        25.0
-Release:        6%{?dist}
+Release:        7%{?dist}
 Summary:        Google Core Libraries for Java
 # Most of the code is under ASL 2.0
 # Few classes are under CC0, grep for creativecommons
@@ -14,7 +14,6 @@ BuildRequires:  maven-local
 BuildRequires:  mvn(com.google.code.findbugs:jsr305)
 BuildRequires:  mvn(junit:junit)
 BuildRequires:  mvn(org.apache.felix:maven-bundle-plugin)
-BuildRequires:  mvn(org.sonatype.oss:oss-parent:pom:)
 
 %description
 Guava is a suite of core and expanded libraries that include
@@ -41,6 +40,9 @@ guava-testlib provides additional functionality for conveninent unit testing
 
 find . -name '*.jar' -delete
 
+# drop unnecessary dependency on parent POM
+%pom_remove_parent
+
 %pom_disable_module guava-gwt
 %pom_disable_module guava-tests
 
@@ -96,6 +98,9 @@ find -name '*.java' | xargs sed -ri \
 %files testlib -f .mfiles-guava-testlib
 
 %changelog
+* Wed Feb 19 2020 Fabio Valentini <decathorpe@gmail.com> - 25.0-7
+- Drop unnecessary dependency on parent POM.
+
 * Wed Jan 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 25.0-6
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild